Americans love their national parks -- and the Friends of Independence are a group of dedicated volunteers who work with Independence Hall National Park in Philadelphia -- the site where we became a nation and the home of the Liberty Bell. Our true National Treasure.

In Seattle there's a boat called the Mallory Todd and it has a very special mission: to take children with cancer, adults who have had strokes, and others who have had difficulties in their lives out for day sailing on Lake Union. Join Captain George Todd and the members of the Sailing Heritage Society as they help those in need in a very remarkable way.

The humorous mating ritual of the California elephant seal, shot at San Simeon California

Why would 21st Century men and women want to sail on the world's oldest working tall ship? They tell you in their own words. experience the majesty of the Star of India, the Maritime Museum of San Diego's star attraction.

A superfast look at the magnificent Renaissance doors of Florence, Italy, cut to a drum track.