Of course it's disappointing if you were planning to visit a national park or Washington, D.C., during the government shutdown, which has closed top attractions, including the 19 Smithsonian Museums, the National Zoo and the National Mall. It's even more disappointing to all those who rely on the tourism industry in Washington, D.C. The American Hotel & Lodging Association said hotels are losing $57.6 million a week in revenue from the shutdown. Still, there are plenty of things to do and reasons to go. We've come up with 75 - but there are many more. Also see: Pictures: Baltimore vs. Washington, D.C.