This razorback ridgeline has doubled as a scenic drive since the early 1900s.

The highest bridge in America was built for an almost unnervingly small amount of money.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

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

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.

A hollow cement depiction of time's inexorable effect on the human body.

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

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

The world's largest collection of the world's largest objects is in one small Illinois town.

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

Less a museum than a bizarre fantasy world created by artists and engineers.

The site of an ancient Mississippian settlement that appears to have flourished during the 10th to 13th centuries.

Three playfully immersive mini golf courses let you travel alongside your ball to the cup at this facility, which has been around since the 1950s.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

A place to eat for on-the-run agents and espionage enthusiasts.

This cave holds a surprisingly colorful variety of geological oddities.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

Towering high above the neighborhood of La Candelaria, the church is easily recognizable by its distinctive red-and-white striped facade.

The colonial city's social history is reflected in its fanciful door knockers.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.