National Park week

It's National Park Week!  From April 16 - 24, 2011 the US National Park Service will be offering FREE admission to all of its 394 park sites. So grab your cameras, wash your nalgenes, and dust off your tevas - it's time to get your butts outside!

Live in an overpopulated suburbanized sink hole... like me?  Not sure where the closest park actually is... like me?  Don't fret, you'll be on your way in no time with this nifty Find a Park search tool.

Here are some vintage US parks posters to inspire you, courtesy of National Geographic.

Credits: Library of Congress

Credits: Library of Congress