The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Vietnam's feral abandoned water park offers access to a post-apocalyptic funscape, now with fewer crocodiles.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

Life-sized painted illusions let pedestrians blend in with the street art.

Monument to a brutal, ineffectual US bombing campaign and a sobering reminder of the human cost of the Vietnam War.