In addition to being Free Museum Day, today is also National Public Lands Day. Hook ’em public lands I guess! To make this National Public Lands Day a rockin’ one, the National Park Service is extending hours at some of the monuments on the National Mall, ABC 7 reports. The Washington Monument will stay open two hours later, and there’s going to be an outside party at the Ellipse from 5 to 8:30 p.m. where you can catch your death. It’s seriously too bad that the weather didn’t cooperate with NPLD this year, seeing as how the National Park Service is screening a sneak preview of Ken Burns’s latest documentary thriller, The National Parks: America’s Best Idea. Don’t worry if you miss the preview: You can catch the premiere on PBS tomorrow at 8 p.m., or at jury duty for many years to come.