There's a long history to national park souvenirs, going all the way back to the 1870s when folks broke off pieces of travertine in Yellowstone National Park to take home. Next week, if you're in Grand Teton National Park, you'll be able to learn about the long history of souvenir collecting in the parks during a special program.

A day-long celebration, complete with chuck wagon dinner and an appearance by President Theodore Roosevelt, is planned to celebrate the addition of more than 5,500 acres to Wind Cave National Park.

There's more -- much more -- to explore in Boston than the Freedom Trail this summer. Head into Boston Harbor Islands National Recreation Area and you'll discover activities for the whole family all summer long.