In San Francisco over the last few years, residents have transformed parking spots into community spaces, closed off stretches of a neighborhood’s streets to auto traffic, and otherwise reclaimed the streets for humans. Everyone is invited. All you need to be is carless, ageless, and marvelous.

There are few better examples of a living, breathing sustainable city than Freiburg, Germany. It’s one of the most livable urban environments in the world, thanks to a deep respect for cultural and architectural roots coupled with bold and unconventional planning decisions. Take a look.