A speakeasy takes on Chicago's drinking culture.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Former meatpacking facility turned vertical farm and sustainable business complex.

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

The trials and tribulations of marking Poe's grave.

A curious building honoring past and current members of a historic musical comedy troupe.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

A huge musical instrument played by the ocean.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

An artsy hidden staircase leads to breathtaking views of San Francisco.

The final resting place of a space program monolith.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

The legendary building that needed ghostly approval before being built.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

A little stop along the Texas highway where Rock Hudson, Elizabeth Taylor, and James Dean stayed while shooting the 1955 film "Giant."

What may be Boston's finest Art Deco building, located in the city's Financial District.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.