A partially hidden wall graffitied by spectators of the 1976 Bicentennial, recently rediscovered.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

An invitation-only museum of items natural and bizarre, arcane and exotic.

One of the best absinthe distilleries in the United States.

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

San Francisco's most expensive hotel suite includes a secret passageway rumored to have been used by JFK.

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

A huge musical instrument played by the ocean.

A psychedelic labyrinth on the San Francisco bay.

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

Travelers exchange letters with woodland creatures at this mini post office.

Concrete strongholds stand guard over the Golden Gate.

A pier that used to act as a busy ferry dock is now a decaying favorite of local fisherman and urban artists.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

The filming location of a shark attack in Steven Spielberg's famous shark movie.

The site of a tragic massacre that spawned a multimedia franchise.

This stunning gothic ruin was a casualty of the Indiana steel industry crash.

Stroll the grounds built by murder, suicide, and dirty oil money at one of Hollywood's most filmed mansions.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.