City Cold Facts

São Paulo: The City That Banned Billboards — And Found What They Were Hiding

Aogashima: The Tokyo Village Inside an Active Volcano

New York City: Most of Its Tap Water Is Never Filtered

Longyearbyen: The Arctic Town Where Births and Burials Happen Elsewhere

Slab City: The California Settlement With No City Hall or Utility Lines

Baarle: The Town Where Moving Your Front Door Can Change Countries

Kinshasa: The World's Largest French-Speaking City Is 4km From Another Capital — Across the Deepest River on Earth

Picher, Oklahoma: America's Most Poisoned Town Was Once the World's Largest Lead Mine — Now Population Zero

Seoul: From Rubble to the World's 4th-Largest Economy in 50 Years — Three Industries Built From Zero

Seoul: Destroyed in the Korean War, Rebuilt Into a Megacity of 26 Million in 40 Years

Kowloon Walled City: The Densest Place in Human History Was One City Block in Hong Kong

Amsterdam: The City With More Bikes Than People — And 1 Million Sunken on Canal Floors