This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

Inside, ancient treasures. Outside, modern contradictions.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

Prehistoric animals decorate this popular outdoor park.

Creek water that starts here has a 50/50 chance of ending up in the Atlantic or the Pacific.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Rare recess caves fill this unbelievably beautiful Ohio park.

This small park features a monumental fountain wall, providing a great photo opportunity in the middle of Houston.

In the parking lot of a fast food restaurant, a statue memorializing a prolific bull elephant.

Covered in tens of thousands of coats of paint, this Indiana attraction holds a world record all its own.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

The cinder cone volcano with a less than complimentary name.

A spiritual vortex among the red rocks in Sedona.

The saga of the massive nut begins and ends in Texas.

Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.

A 131-year-old wunderkammer of Texas history.

The largest underground pedestrian tunnel system in the U.S. mostly caters to the people working in the offices above, but provides a great, air-conditioned way to traverse the city.

Beer lover's can-covered house.

This former coal gasification plant found a curious second life as a popular public park.

A giant Troll lurks under one of Seattle's oldest bridges.

Just a man taking his prehistoric pet for a stroll.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

A museum chronicling pioneer life constructed over Interstate 80.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.