Ha Long Bay's thousands of limestone karsts and isles are believed to have formed over 500 million years ago. elaborate
Buenos Aires has more theaters per capita than any other city in the world. elaborate
Playa del Carmen's famous Fifth Avenue (Quinta Avenida) was once a simple dirt road. elaborate
Hangzhou is home to the world's largest single-span arch bridge, the Hangzhou Bay Bridge. elaborate
Jaipur's Hawa Mahal (Palace of Winds) has 953 small windows, designed to allow royal women to observe street life unseen. elaborate
Algiers is built on hills, resulting in a city with a dramatic, layered landscape and a network of funiculars to help residents navigate the steep inclines. elaborate
Kigali is known for its remarkably clean streets, a result of city-wide initiatives and community involvement. elaborate