Steepest flood safety railway in the entire world.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

10,500 square feet of pinball housed in former dollar store and home to the last playable "Thunderball."

This church in Pittsburgh is home to the largest collection of religious relics in North America.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

An ode to filmmaker George A. Romero, who used the mall to film an iconic horror movie.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

Statue dedicated to the star of an old television show.

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

Millions of dollars worth of sculpture decorate this Iowa city center.

Piled high inside this warehouse and coffee shop are salvaged goods that span every corner of the globe.

This zombie-themed restaurant stands out in the heart of corn country.

Community bookshelf of 25-foot-tall book spines.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

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

A chessmaster's dream destination.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

This is not your typical jungle gym.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

A massive sustainable farm designed by the mastermind behind Central Park.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.