A Brief History: The Smallest National Park Site

This summer, intrepid travelers will spend weeks in the great outdoors, exploring national parks across the country. For those who don't have that kind of time, you can always take a few minutes to tour the smallest attraction in the National Park System.

Don't bother with the sunscreen and bug repellent. The Thaddeus Kosciuszko National Memorial is inside a narrow row house in Philadelphia.