Where commuters walk through remnants of an ancient Greek necropolis.

Historic medieval fortified city in southwest France.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Home to items never before seen by the public.

The site of the climactic scene from the classic horror film is now a historic landmark.

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

This iconic water tower and failed bandstand is open for panoramic views once a year.

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

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

The only arched bridge made of stone on the entire Mississippi River.

Secret hideaway for an alternative beach experience.

The literary king of the Jazz Age was born in this lovely Minnesota home which still honors his legacy.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Half of a waterfall goes into the river while the other half seems to disappear.

A former seaside jewel built for the everyman is now simply a neglected art deco fortress.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

Elevated freight railway turned wildly successful urban park.

A terrific purveyor of natural history objects and curios.

An unconventional space for art and science housed in a massive old warehouse.

An abandoned subway tunnel that could have reinvigorated Staten Island still lies somewhere beneath this Brooklyn park.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.