An encyclopedic collection of mammal penises.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Stockholm's deepest subway station is also a stunning ecological wonder.

Sound travels strangely in this underground whispering gallery.

Stockholm's narrowest alley is barely over two feet wide.

Sweden's "good old days" painstakingly re-created in a model village.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Iconic red and white plaques show the creative names invented to navigate the city streets.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

A collection of witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

One of the largest trees of its kind in California.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

World-famous, Pink's still manages to keep its prized cult fetish status.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

A huge musical instrument played by the ocean.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

Location of a reliquary containing bone fragments of 18 saints.

St. Augustine's record-setting narrow street was designed to protect against pirates.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.