This museum dedicated to an oft-overlooked support industry features a surprisingly moving brass diorama of a man being saved from a sinking car.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

A lush green oasis in the middle of Chicago.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

Follow the steps, and this roadside artwork will teach you how to dance.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

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

An overlooked memorial honoring the local Washington residents who died in World War I.

The walls of the iconic dome are hollow and have a secret stairway.

A statue honoring 44 continuous years of greeting passing ships.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

An acoustic anomaly with a mysterious cause sits in the heart of Tulsa.

A half-size replica of the World Trade Center towers above Tulsa.

The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

A wealth of local folk art, antiques, and curios, without ever leaving your car.

A local landmark with generations of spraypainted messages, and more being added each day.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.