A remarkably intact castle that once was the largest in Ireland.

One of Ireland's most infamous prisons for rebels including men, women and children.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The vaguely man-shaped root that ate the body of the founder of Rhode Island.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

The "Seinfeld" diner.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

Why have you never heard of the second most popular tourist site in New York?

A gigantic 10-foot tall stone man.

A sewing machine tycoon built this miniature castle for the people and to beautify a lakeshore.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The site of Paul Revere's historic two lantern warning.

Dim sum, served in a grand old theater.

She stares out across six lanes of traffic, clutching a musket and infant with determination.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A priceless work of art created by the saint's own blood sister hangs in a San Antonio basilica.