Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Buried nine feet under, these houses are preserved as a stark reminder of the disastrous 1991 Unzen eruption.

Home to the abandoned Tioronda Hat Works Factory, this park is a combination of woodlands and marshlands.

Rare and classic books by Black authors are the focus at this independent bookstore in a historic Atlanta neighborhood.

A tiny slice shop hides down an unmarked hallway in a Las Vegas casino.

This lakeside bunker complex in Mamerki, Poland, housed the Supreme Military Command of Nazi Germany during World War II.

This Connecticut video store has a vast and varied archive that contains everything from 'Koyaanisqatsi' to 'The King's Speech.'

Only the headframes remain from this mining operation, once one of the largest in the region.

One of Serbia's oldest luxury hotels and a nostalgic echo to Yugoslavia in the state's former capital.

The crumbling remains of a 19th-century textile factory.

This observation tower is a longstanding, 1960s landmark in the Thousand Islands region of Canada.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

The bones of an old zoo crumbling in the shadow of a new one.

This empty Detroit high school was too expensive to maintain or destroy.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

Glass and concrete building designed by Albert Kahn.

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

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

Enormous small-business mecca in the Midwest, serving dozens of artists.

Abandoned concert venue legendary for its rock counterculture.

The young Black revolutionary was killed before getting to see a non-segregated pool in his hometown.

The secret city built by the Manhattan Project.

A picture-perfect town, perfect for blowing up.