The Forbidden City – China's imperial palace through five centuries and 24 rulers – stands in the middle of Beijing. As this video shows, it's full of remarkable details – and, most days, a seething mass of foreign and domestic tourists.
So give yourself plenty of time. The site (which last housed a sitting emperor about 100 years ago) covers 180 acres, including dozens of gates, bridges, courtyards and rooms with endlessly intriguing name (like the Hall of Mental Cultivation). The complex has served as a museum since 1925. I shot the video in July 2013.