This supper-club-turned-concert-venue still serves drinks at its original rotating bar.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

A group of artists transformed this desolate city alleyway into an outdoor gallery of street art.

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

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

This storied music venue was once a tavern that housed an Italian Anarchist book club and prohibition parties; today it's a community space for artists and musicians.

The oldest certified bowling alley in the United States is in the basement of this century-old bar.

A place to eat for on-the-run agents and espionage enthusiasts.

An abandoned warehouse turned art sanctuary in New Orleans.

Home to drunken tower-climbing goats... seriously.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

The juke joint where legendary soul artists ate, drank, and made merry.

This homegrown adoption center offers a wonderland of feline companionship.

This quirky curiosity shop takes its cues from the world's bazaars.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

This often-overlooked ocean walkway was once considered an impossible fantasy.

One man's fulfilled dream of living on an artificial island made of recycled plastic bottles.

Still standing despite its considerable slant, this tilted lighthouse has become a local symbol of resilience.

Found down a long dirt road, a sacred Mexican cenote and 18th-century hacienda remain hidden.

This popular cave pool is truly magical, despite the crowds.

These winged Maya figures are the subject of speculation and conspiracies.