Welcome to Chongqing — the city built on cliffs. Skyscrapers grow out of mountain spurs, the subway runs through apartment buildings (yes, literally), and the Hongya Cave stilt-house complex at night looks like Studio Ghibli designed a real metropolis. Add the world's spiciest hot pot (numbing peppercorn + chili oil + duck blood + tripe), and you've got China's most cinematic megacity.