A plaque on the side of a parking garage marks the burial place of a great Ottawa chief.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

One of the world's earliest skyscrapers.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

In 1912, a broken section of the reservoir wall released millions of gallons of water and destroyed many homes downhill.

This church houses the “incorrupt” body of its founding Bishop.

This award-winning men's bathroom was just too beautiful to not allow women to see.

A psychedelic tribute to one of Georgia's most unique artistic visionaries, out of place and time in the heart of Atlanta.

The largest known Ancient Egyptian obelisk.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

The once highest point in China blends symbolic design with a kick of adrenaline.

A giant scale model giving a sneak peek at what urban planners see for Shanghai by 2020.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Two cannon-like cranes were installed on top of the bank building to fend off bad feng shui.

The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.

An eerie collection of the surviving structures from a past celebration of the future.

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

Spain's largest bullring offers a unique glimpse at architecture and history.