Abandoned bridge hidden deep in the San Gabriel Mountains.

This century-old cinema is complete with musical interludes and boasts a rare projection system.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

A small island hides in plain sight on Austin's Lady Bird Lake.

Edison's cast-in-place concrete houses were a failure, but way ahead of their time.

A hidden subterranean installation offers a view of the sky.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

Norway has built what may be the world's most beautiful public toilet.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

This 15-story mural celebrates the 50th anniversary of the musician's iconic "At Folsom Prison" album.

You can row a boat through this ancient underground reservoir.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Modern art meets modern convenience in possibly the world's most architecturally important public bathroom.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

This fireplace-turned-monument pays tribute to the assassinated U.S. president.

A small structure built from used railroad ties honors the short term of America's 20th president.

A serene temple with stunning stained glass hides in downtown Dallas.

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

Tile mosaics and quotes from Pablo Picasso add an artistic flair to these bus stop benches.

A medieval castle in the middle of rural Texas.

This tiny, hurricane-resistant house in Galveston is one of the city's most notable architectural oddities.

The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.