Salem Maritime National Historic Site

The country's first National Historic Site celebrated its 75th anniversary earlier this month, and the occasion offers the opportunity for some fun challenges for NPS trivia buffs. Can you identify the NPS area claiming this historic "first"? How about the location of America's first National Battlefield, or the former national park that's now a national monument?

Nearly 70 National Park System units along the Eastern Seaboard were either fully or partially closed due to impacts from "superstorm Sandy," and it could be days before some reopen.

Creaking on the tides under the weight of its three masts and 55 miles of rigging, the Friendship is a floating reminder of a time when the upstart United States laid a commercial claim to the high seas.