Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

At the base of the Golden Gate Bridge, a small sign basically begs for a high-five.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

A brooding mansion of clinker brick stands out among the Victorian houses of Pacific Heights.

One of few lasting examples of the brief octagon craze that developed into folly.

Once the fastest ship from San Francisco to Tahiti, the Galilee now lays in pieces in three different cities.

An unassuming grey box sitting on San Francisco's Pier 17 is a "sky diary" of the coastal city's temperamental weather.

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

Floating man-made island and upscale restaurant.

The video game-themed street art first popped up in the French city.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

This deconsecrated church has seen many uses, from a tobacco storehouse to a cinema.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

This historic folk museum celebrates the attention to detail that makes America great.

Inside this community-run museum, visitors are treated to the history of toys and games.

This castle constructed in 1928 was crafted from drawings of Lismore Castle in Ireland.

More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

A simple midtown bar was once the home of a secretive and exclusive club staffed by "bunnies" under Hefner's strict rules.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

An annual extravaganza of Broadway theater memorabilia.

An unassuming secret door once led to a legendary watering hole.

Fake subway tiles were installed to cover a design that resembled the Confederate flag—it's unclear if the resemblance was intentional.