The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Inside the Wayne County airport is an amazing collection of lights and sounds.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

This Las Vegas casino boasts one of only three spiral escalators in the United States—an engineering wonder.

A surreal, interdimensional shopping center and portal to another universe by Meow Wolf.

The oldest continuously occupied public building in the United States.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

Art Deco stylings conceal the true nature of this bridge.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

Phoenix man has two yards full of vintage signs and antiques.

This replica of the Greek structure is in the heart of Nashville.

Dothan, Alabama has been invaded by scores of anthropomorphic peanuts.

This tiny, triangular block has held the world record since 1964.

A technicolor place of worship for Elevationists.

A monument to the King's final show, complete with a time capsule.

This Indianapolis landmark offers a secret panoramic view of the city. 

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

Opened in 1976, this monster-sized version of the fast-food franchise is sometimes called the Epic McD.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

A mysterious and terrifying public art goblin seemingly meant to inspire local legend.

After retiring, Gary Pendergrass turned his yard into a wonderland of outsider art.

The largest mural in the world painted by a single artist.

Created by Catalan artist Joan Miró in 1978 and made up of 350,000 tiles, this mural is the only large-scale glass mosaic the artist ever created.