In this March 3, 2010, file photo, the monument of Venezuelan independence hero Francisco de Miranda is seen as waves splash on Malecon avenue in Havana. The foreigners visiting Havana used to be Canadians and Europeans on cheap beach package tours and left-leaning Americans on dutiful rounds of organic farms and neighborhood health clinics. Ten months after the U.S. and Cuba declared the end of a half-century of official hostility on 2015, the mood in Havana has changed. (Photo by Javier Galeano/AP Photo)





In this September 16, 2015, file photo, women play dominoes in a building courtyard in Old Havana, Cuba. The sprouting of high-end clubs and bars around Havana is unsettling to many in Cuba who grew up believing in equality as a tenet of the revolution, and now see foreigners and wealthy Cubans spending many times in one night the roughly $30 monthly salary of the average Cuban state worker. (Photo by Ramon Espinosa/AP Photo)





In this July 20, 2015, file photo, Javier Yanez looks out from his balcony where he hung a U.S., and a Cuban national flag, to celebrate the restored full diplomatic relations between Cuba and the Unites States, in Old Havana. The Cuban government has not announced any big deals with American companies since December 17. (Photo by Ramon Espinosa/AP Photo)





Himisis, 51, stands near piggybanks and religious statues for sale, in her house in Havana October 26, 2015. (Photo by Enrique De La Osa/Reuters)





A damaged building is pictured as the sun sets in Havana October 26, 2015. (Photo by Enrique De La Osa/Reuters)





A man walks past two women as they sit with their daughters on a sidewalk in Havana October 26, 2015. (Photo by Enrique De La Osa/Reuters)





A man rides his tricycle taxi on a street in Havana October 26, 2015. (Photo by Reuters/Stringer)





A man carries scaffolding in Havana October 26, 2015. (Photo by Reuters/Stringer)





Children sit on the sidewalk during sunset in Havana October 26, 2015. (Photo by Reuters/Stringer)





Cubans repair a car on a street in Havana October 27, 2015. (Photo by Enrique De La Osa/Reuters)





Cubans line up to buy food at a state cafeterian in Havana October 27, 2015. (Photo by Enrique De La Osa/Reuters)





A student carries a picture of the rebel hero Camilo Cienfuegos during a gathering in honour of Cienfuegos at Havana's seafront wall "El Malecon", October 28, 2015. Cienfuegos was a commander of Fidel Castro's rebel army but died less than a year after their victory when his plane disappeared over the ocean on October 28, 1959 enroute from Havana to Camaguey. The plane and his body were never found. Every year on October 28, Cubans toss flowers into the sea in his honour. (Photo by Reuters/Stringer)





Schoolchildren leave after throwing flowers into the sea in honor of rebel hero Camilo Cienfuegos from Havana's seafront boulevard "Malecon", October 28, 2015. (Photo by Reuters/Stringer)





In this September 27, 2015, file photo, a former East German-made MZ motorcycle sidecar is filled with vegetables and stew ingredients at a market in Havana, Cuba. The sprouting of high-end clubs and bars around Havana is unsettling to many in Cuba who grew up believing in equality as a tenet of the revolution, and now see foreigners and wealthy Cubans spending many times in one night the roughly $30 monthly salary of the average Cuban state worker. (Photo by Desmond Boylan/AP Photo)





In this October 10, 2015 photo, businessman Ziad Chamoun, a Boston-area restaurant and club owner turned wine importer, swims with guide Hannah Berkeley as he spends the afternoon at a waterfront villa in Havana, Cuba, Saturday. "The next big bubble is going to be nightlife. That's what happened to Cancun," said Chamoun. After working as a freelance journalist and guide for clients, Berkeley now spends at least three weeks a month taking groups of moneyed Americans on rounds of Havana's clubs by night and crumbling housing stock in search of real-estate investment opportunities by day. (Photo by Desmond Boylan/AP Photo)





In this August 26, 2015 photo, a boy rides next to the engineer of an electric Hershey train in the Casablanca municipality of Havana, Cuba. The conductor slowed the train down to avoid hitting a shepherd's flock of goats grazing along the tracks. (Photo by Ramon Espinosa/AP Photo)





In this August 28, 2015 photo, a train that departed Santiago de Cuba arrives at sunrise to Havana, Cuba. Cubans pay a little more than $1 to shuttle goods or visit faraway family, between the capital and Santiago. Visiting foreigners are charged $30 for the same trip. (Photo by Ramon Espinosa/AP Photo)





In this March 23, 2015 photo, a girl sleeps on a moving train with her family as they travel from Santiago de Cuba, to Santa Clara, in the Holguin province of Cuba. While the island is slowly modernizing its rail system, it remains the slowest way to get around already slow-moving Cuba. (Photo by Ramon Espinosa/AP Photo)





In this October 11, 2015 photo, a train wagon made to look like a bus, moves along the tracks on the outskirts of Trinidad, Cuba. This train, known as a "train auto motor", moves passengers to and from the outskirts of the city. (Photo by Ramon Espinosa/AP Photo)





In this March 23, 2015 photo, a working cowboy travels by train to Santa Clara to participate in a rodeo, as the train moves through the province of Holguin, Cuba. (Photo by Ramon Espinosa/AP Photo)





In this March 23, 2015 photo, a man looks at a tank being transported on a paused cargo train, as he travels by train through the province of Holguin, Cuba. The train system suffered along with much of the country's infrastructure when the Soviet Union's collapse cut Cuba off from the subsidies that Moscow had pumped into its economy. Currently, a longstanding U.S. trade embargo makes it hard to get parts. (Photo by Ramon Espinosa/AP Photo)





In this March 23, 2015 photo, tools that belong to a train maintenance worker sit alongside the tracks before the start of his work day in San Luis, near Santiago de Cuba, Cuba. (Photo by Ramon Espinosa/AP Photo)





In this August 26, 2015 photo, a train conductor walks from car to car, collecting passenger tickets on the electric Hershey train as it travels toward the Casablanca municipality of Havana, Cuba. Trains connecting Cuba's capital with the former chocolate company town of Hershey in Matanzas province are filled with tourists who pay less than 50 cents for the trip as the island floods with visitors after the declaration of detente with the United States. (Photo by Ramon Espinosa/AP Photo)





In this October 12, 2015 photo, a family on a horse-drawn carriage crosses the train tracks that connect Trinidad with the "Valle de los Ingenios", or Valley of the Sugar Mills, in Cuba. After decades of neglect due to the fall of the sugar industry, dozens of empty mills remain standing in this valley that was once part of the booming sugar industry in the 19th century, when plantation owners used slave labor. In 1988 the area became a UNESCO World Heritage Site. (Photo by Ramon Espinosa/AP Photo)





In this March 23, 2015 photo, a commuter puts his feet up in a train traveling from Santiago de Cuba to Santa Clara, in the province of Holguin, Cuba. The trip from Havana to Santiago, 475 miles (765 kilometers) to the east, takes an average of 15 hours, if the train doesn't break down. A slightly more reliable train with air conditioning currently is not running while it undergoes repairs. (Photo by Ramon Espinosa/AP Photo)





In this March 23, 2015 photo, passengers pass the time chatting on the landing of a train car as a farmer rides his horse alongside the tracks in the province of Holguin in Cuba. Cuba became the first Latin American country with a train system in the mid-19th century when colonial Spain began connecting Havana with the sugar-growing regions outside the capital. (Photo by Ramon Espinosa/AP Photo)





In this March 23, 2015 photo, a train passenger looks out at the countryside between Ciego de Avila and Santa Clara, Cuba. While the island is slowly modernizing its rail system, it remains the slowest way to get around already slow-moving Cuba. (Photo by Ramon Espinosa/AP Photo)





In this March 23, 2015 photo, a cowboy wearing a U.S.A. belt buckle smokes on the landing of a train car as he travels to a rodeo in the province of Holguin, Cuba. From east to the west, trains offer a fine-grained, slow-moving view of Cuba that few foreigners ever see. (Photo by Ramon Espinosa/AP Photo)





In this August 26, 2015 photo, antique American cars wait for an electric Hershey train to pass through the Casablanca municipality of Havana, Cuba. The train connects Casablanca to the city of Matanzas. In 1916 the Corporation of Pennsylvania Hershey built a network of electric railways to transport their products and workers to the Hershey sugar factory, just east of the capital. Two of the electric train lines are still running, between the former town of Hershey that connects with Matanzas and Casablanca. (Photo by Ramon Espinosa/AP Photo)





In this October 10, 2015 photo, Ralph Jaeger, Managing Director of Siguler & Guff, left, guide Hannah Berkeley, right, Joseph M. Majchrzak, a lawyer based in Massachussettes, second from right, and Chris Tosi, Co-owner of Pastene Companies Ltd, third from right, toast during a meal at a waterfront villa in Havana, Cuba. The city is filled with hedge-fund managers sizing up their chances to make millions in one of the last bastions of communism. (Photo by Desmond Boylan/AP Photo)





People pack the basement of one of Havana's hottest clubs, the "Shangrila," for a private concert by Leoni Torres, one of Cuba's biggest pop stars in Havana, Cuba, Wednesday, October 14, 2015. While most Cubans remain on the outside looking in, Havana's high society has a gold-rush, center-of-the-universe pulse that hasn't existed here since Fidel Castro stormed down from the mountains in 1959 and threw out the last group of foreigners who saw Havana as their tropical playground. (Photo by Desmond Boylan/AP Photo)





Tourists sit in the popular O'Reilly 304 Bar in Old Havana, Cuba, Tuesday, October 13, 2015. Tour companies showing the Americans around Cuba have sprouted investment consulting arms. Cubans with money and foreign backers are furiously rehabbing old homes into micro-hotels complete with high-end restaurants and conference rooms for business meetings. (Photo by Desmond Boylan/AP Photo)





Students play as waves crash on Havana's seafront boulevard "El Malecon" during a gathering in honour of rebel hero Camilo Cienfuegos, October 28, 2015. Cienfuegos was a commander of Fidel Castro's rebel army but died less than a year after their victory when his plane disappeared over the ocean on October 28, 1959 enroute from Havana to Camaguey. (Photo by Reuters/Stringer)





Schoolchildren throw flowers into the sea, in honor of rebel hero Camilo Cienfuegos, from Havana's seafront wall "El Malecon", October 28, 2015. (Photo by Reuters/Stringer)





School children gather in honor of late rebel hero Camilo Cienfuegos at Havana's seafront wall "El Malecon", October 28, 2015. (Photo by Reuters/Stringer)





Military school cadets take part in a ceremony commemorating the 56th anniversary of the death of Camilo Cienfuegos who, along with Fidel Castro and Che Guevara, was a chief commander of the Cuban revolution in Havana, Cuba on October 28, 2015. (Photo by Xinhua/REX Shutterstock)





A soldier takes part in a wreath-laying ceremony attended by Italy's Prime Minister Matteo Renzi at Jose Marti Monument in Havana, Cuba October 28, 2015. (Photo by Enrique de la Osa/Reuters)





Pierre Casiraghi (L), his wife Beatrice Borromeo Casiraghi (C) and his mother Princess Caroline of Hanover sit in a coco taxi in Havana, October 29, 2015. Princess Caroline of Hanover is in Cuba to attend the performance of the Les Ballets de Monte-Carlo during the XVI Havana Theater Festival, according to local media. (Photo by Reuters/Stringer)





In this March 23, 2015 photo, a street vendor sells homemade sweets to travelers at a train station in the Ciego de Avila province in Cuba. At their peak, Cuban trains featured dining cars and other high-end services. Today, refreshment comes from the vendors who board at many stations offering cold sandwiches and soft drinks. (Photo by Ramon Espinosa/AP Photo)





In this August 26, 2015 photo, a young man boards the electric Hershey train with two live goats at the Hershey train station in Cuba. He's traveling to Casablanca, a municipality in Havana where he'll sell his livestock. (Photo by Ramon Espinosa/AP Photo)





In this March 23, 2015 photo, a woman who just got off the train uses the tracks to cross a bridge after arriving to her destination in the province of Holguin, Cuba. Cuba became the first Latin American country with a train system in the mid-19th century, with the network growing to 5,600 miles of rails crisscrossing the island before the system fell into disrepair. Currently, a longstanding U.S. trade embargo makes it hard to get parts. (Photo by Ramon Espinosa/AP Photo)





In this March 23, 2015 photo, an off-duty police officer travels with his family to Santa Clara during a long trip through the province of Holguin in Cuba. From east to the west, trains offer a fine-grained, slow-moving view of Cuba that few foreigners ever see. (Photo by Ramon Espinosa/AP Photo)