Part of a secret 1970s nuclear defense program is now open to the public.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

This statue of Olympic hockey coach Herb Brooks immortalizes one of the greatest moments in American sports history.

Meet the "Green Monster" of Monico, Wisconsin.

Water flowed out of the town's unusual tree stump fountain in the 1930s, and the well still runs today.

The world's largest sticker ball weighs in at a mighty 231 pounds.

Where the notorious gang lived while on the run from the FBI.

A half-size replica of the World Trade Center towers above Tulsa.

Built in 1931, this small passageway is believed to be the first modern skyway.

One of the best examples of Art Deco architecture in the United States.

Songwriter Leon Russell transformed this church into a recording studio used by many legendary musicians.

The home where a lovestruck Fitzgerald wrote his first published novel, "This Side of Paradise."

This abandoned, windowless concrete block is one of the strangest buildings in Tulsa.

Dubbed the "Blade Runner dragon," this buzzing neon sign is a beloved local icon.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

The basement bowling alley of this St. Paul dive bar is decorated with thousands of dollar bills.

An unusual assortment of art, furniture, and other curiosities.

This sky-high radio mast is formerly the tallest man-made structure in the world.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

A few dilapidated structures are all that remain of this deserted former silver mining town.

A legendary speakeasy bookstore returns from the brink.

This library and museum is dedicated to the life and literature of the Indianapolis native author.

A jaw-dropping brutalist space church seems to have crash-landed in the middle of America.

This museum chronicles the history of a leprosy quarantine hospital that then became a refuge.