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

The longest navigable underground river in the United States is home to countless blind and albino animals.

Exact replica of the ancient monument, but much, much lighter.

A beautiful, creepy 19th-century castle stands incongruously in rural Vermont.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

This former mining town was named the most toxic town in America.

This is one really big nut.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Maine's oldest diner also happens to win acclaim for its elevated comfort food.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.

This giant mimetic milk bottle has encouraged Route 66 travelers to choose dairy since 1948.

The surprising home of the iconic Santa Monica Pier Ferris Wheel.

Raised high above the Cimarron River, this 1,268-foot rail bridge followed a half-century of trainwrecks, bridge collapses, and an abandoned town.

The United States's largest hand-dug well is topped with a state-of-the-art museum.

A former chicken restaurant that doubled as a speakeasy is now a quirky home full of wonderfully strange traditions.

Along the historic Mother Road is an old gas station with a secret counterfeiting past.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

The secluded beach getaway from Wes Anderson's dreamy summer romance.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

One of the oldest and largest Buddhist structures in the Americas, located in a peaceful forest outside Mexico City.

The intriguing personal collection of a professional demon-chaser.

This stunning Connecticut mansion is actually just a one-room-deep hoax.

This forlorn park is the result of a failed investment turned tax dodge.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.