In this photo taken on Wednesday, June 5, 2019, a woman walks across the Chain Bridge over the Danube River in Budapest. A tourism boom in the Hungarian capital has led to major congestion on the river flowing through the city, with sightseeing boats and floating hotels competing for better positions in front of spectacular neo-Gothic buildings, ornate bridges and churches lining the Danube. (Photo by Laszlo Balogh/AP Photo)
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