A monument to the egos of two railroad magnates that fell into decline along with their careers.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

One of the smallest towns in the United States.

This replica small town lets visitors take a stroll through the story of progress in the U.S. via thousands of Americana artifacts.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

A beautiful combination of living flora with preserved bones covers the shelves of this shop.

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

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

Journey up the capitol building's cupola for an amazing view of Topeka.

These otherworldly limestone formations jut out from the Kansas prairie.

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

Where the Millerites gathered to watch the end of the world in 1844—and left disappointed.

A giant steel sculpture with animals in its shadows.

This New York estate was designed to resemble a medieval Scottish castle.

A bronze ballot box stands at the spot where Susan B. Anthony voted illegally.

A bar, burger joint, and arcade housed in a late 19th-century church building.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

It’s not hard to see why the historic Peabody Conservatory of Music’s library has been described as a “cathedral of books.”

Wedged between two sets of row houses is an awkwardly located family graveyard.

Once America's tallest structure, now a Baltimore landmark.

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