The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Explore some of the most unique vehicles in history along with a cast of unsettling mannequins.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Mural made of 100,000 pieces of hand blown glass, and one of the largest glass murals in the US.

A beautiful oddities shop crammed with strange and morbid curiosities.

It was once nicknamed "the most bombed hotel in Europe."

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

This cemetery overlooking the Benbulben rock formation is the final resting place of one of Ireland's most beloved poets.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

The ruins of a medieval monastery named after a type of tree.

Legend says this rock was once a chopping block for public executions.

This pyramid is dedicated to all those who suffered martyrdom for civil and religious liberty in Scotland.

A striking glass tribute to two sisters who suffered during Scotland's "Killing Time."

A grave marker depicting a body snatching tableau on a 19th-century tombstone.

It's said this was once the home of King James V's pet lion.

Built in the 16th century, the tower is now in ruins.

A once extravagant mansion, now reduced to ruin.

These fantastically named natural pools look like something out of a Scottish myth.