A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The monumental steeple on Amherst College's campus has no church attached to it.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

These pretty kitties killed and ate as many as 135 railway workers.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The system of air guns are fired off remotely to scare any trespassing avians.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Decommissioned experimental solar facilities that pioneered solar energy technology.

Semi-precious Blue John stones have been mined in this cavern system for centuries.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

The Pope’s secret escape route.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

Pop culture has helped to keep this iconic British building from being destroyed.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

This impressive Boston holy house is the American mecca for Christian scientists.