George Lucas' groundbreaking art museum exits Chicago

Bucharest's new urban nature park is a 450-acre twist of fate

Earth gets a surge of new ocean sanctuaries

Why is it so hard to create a national park?

Should we limit visitors at national parks?

Minneapolis and St. Paul's park systems are pretty much perfect

Houston's long-forgotten subterranean reservoir opens to the public

Urban parks are less senior-friendly than you might think

9 unforgettable urban waterfalls

Brooklyn's Prospect Park enlists goats for weed-removal duties

Philadelphia's parks are getting the Google Street View treatment

Off limits since 1934, a secret nature sanctuary reopens in Central Park