The largest underground pedestrian tunnel system in the U.S. mostly caters to the people working in the offices above, but provides a great, air-conditioned way to traverse the city.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

A small alleyway lined with locally drawn scenes of nostalgic anime and cartoon characters.

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

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

One of the few working locomotive roundhouses in the United States.

This elaborately-carved white marble fountain was built to stand outside the Detroit Opera House.

Indiana's shrine to the sport that has become a hallmark of their culture.

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

Inside the Wayne County airport is an amazing collection of lights and sounds.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

This private residence was the template for one of the most beloved television homes of all time.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

This family-owned bakery is one of the last places in Brooklyn to sell the Nation of Islam–inspired bean pie.

The world's tallest statue of an American hero.

Giant heads occasionally litter the industrial Houston neighborhood where sculptor David Adickes has his studio.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

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

Standing guard on top of an old, vacant ice cream shop.

Concrete igloos standing across from what remains of the Michigan Central train depot.

Detroit’s Eastern Market has been transformed into an outdoor museum with colorful murals that address social issues and symbolize the city.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

255 feet of suds, scrubbers, and blow dryers.