The article discusses two ongoing public art projects that explore the idea of urban parks. In San Francisco, California in 2005, Matt Passmore created a temporary park at one of the city's street parking spaces. PARK(ing) Day installations have now spread across the world in emulation of Passmore's idea. In Los Angeles, California, a collective of artists and academics known as the Los Angeles Urban Rangers organize events that help participants explore the city as if it was a national park.