This extraordinary model train layout covers over 1,700 square feet, with multiple trains running simultaneously.

Built in 1981 in collaboration with Andy Warhol, this giant piece of pop art stands on the campus of Colorado State University.

A gift to the children of Boston, this bronze bear represents playfulness, a spirit of love, and the warmth of big hugs.

A eight-foot-tall statue resides in the heart of Pennsylvania anthracite coal country.

A stone marker commemorating the first time sound was transmitted over wires.

For more than 25 years, this Philadelphia store has been offering a wide selection of Victorian oddities and antiques.

A comprehensive collection of toy and model trains, largely from the mid-20th century.

Dedicated to a colonial woman who was hanged for being a Quaker.

Intricate, eye-catching, award-winning rubber sculptures liven up this Pennsylvania town.

The train collection of an eccentric New England seafood mogul is now a National Historical Site.

A huge railroad museum with over 100 pieces of rolling stock focusing on the railroad history of Pennsylvania.

If you don't look closely, you might mistake this sculpture for just another passenger waiting at the airport.

Since the 1930s, this Pennsylvania town has celebrated the humble tomato.

Abandoned blast furnaces are an enduring reminder of Scranton's once booming iron business.

A tragic mystery left this boy nameless for 65 years.

Check out the 125-pound chocolate reindeer in the back of this candy shop.

One of the world's oldest continually operating bookstores.

A dedication plaque on this Boston tunnel is a microcosm of a massive, controversy-laden construction project.

This island hill is strewn with boulders carved by shipwreck victims from the age of sail.

A 220-foot deep watery drop-off, filled with marine life.

A ceramic-tiled room at the Seelbach Hotel said to have secret tunnels used by Al Capone and a crowd that helped inspire F. Scott Fitzgerald's 'The Great Gatsby.'

One of the oldest surviving bars in the United States, located at the site of the last skirmish of the American Revolution.

A copy of the famous bus used during the filming of 'Into the Wild' is on display at an Alaska brewery.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.