This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

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

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

An enclosed rotunda at the Henry Art Gallery in which viewers can look up and see the uninterrupted sky.

Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

A rotting tree in the middle of Seattle doubles as an elaborately-controlled art piece.

A (slightly) grownup take on the classic retro arcade.

The first park built over a freeway is a brutalist masterwork.

Essence of hound's tongue and tincture of bloodroot are just the tip of the herbalist iceberg at this beautiful, impressively-stocked apothecary.

A beautiful final resting place for some of the noteworthy deceased.

This former coal gasification plant found a curious second life as a popular public park.

A giant Troll lurks under one of Seattle's oldest bridges.

A walk through the historic city center, under the streets of Seattle.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

A classic mystery spot complete with spots that are said to make you shrink or grow when you stand on them.

This amazingly preserved Gold Rush town is a historian's dream.

A classic carnival ride that was carved to be untouchable.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

A tongue-in-cheek arcade where the games are based on everyday life.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

Banksy gives themself artistic license with this piece of London street art.