Brazil's Complex Alemão, one of the biggest slums in the world, is known as a dangerous warren of big-time drug traffickers. For Zhang Xinyu and Liang Hong, a Chinese couple in their mid-30s, that was part of the attraction.
Wall Street Journal: Wealthy Chinese tourists travel to Brazilian slums, Chernobyl
Abandoned amusement park in central Prypiat, Ukraine, is a reminder of the once flourishing city.
