A priceless collection of the Nation's cryptologic history.

A benevolent, 16-foot-tall river dragon lives on a suburban lawn.

An astounding collection of medical specimens, including bits of President Lincoln.

For one day every month Barcelona's Estació de França transforms into a market for model trains.

Creaky dinosaurs grow in the backroads of Monmouth County, New Jersey.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

Huge masonic hall in Philadelphia with lavishly themed rooms.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

The early American colonists were such ferocious drinkers the law actually required every town to have a tavern.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

This painted Lego bridge is the product of over a century of locomotive history.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

One of the oldest of its kind.

The first American department store, and home to the largest operating musical instrument in the world.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

Dr Barnes' $25 billion private collection of art and arboretum.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."