Community bookshelf of 25-foot-tall book spines.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

This abandoned prison castle has become an imposing gallery of graffiti art.

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

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

Once in disrepair, the house where the 1983 film was shot has been restored and turned into a museum.

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

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

Standing at 21-feet tall, this space cowboy adds to the legacy of Route 66's muffler men.

The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

These massive mitts are made of 30 tons of devotional bronze.

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

An acoustic anomaly with a mysterious cause.

Every dish is blessed in this basement eatery beneath a Hare Krishna temple.

A B.Y.O.B. Mexican cantina lives inside one of the last tortilla factories in Brooklyn.

This family-owned bakery is one of the last places in Brooklyn to sell the Nation of Islam–inspired bean pie.

In Little Caribbean, an ice-cream shop serves up regional flavors, including soursop, Irish moss, and "greatnut."

Though the case is scorched and the buttons half-melted, this hardy handheld gaming device can still run a game of Tetris.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

A hidden beach at the end of a tunnel of mangrove trees.