A creepy steel gremlin has protected the Bay Bridge since 1989.

A sprawling Victorian farm that has been surrounded by a capital city is one of Canada's greatest treasures.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

A lighthouse built to save lives that took quite a few with its treacherous location.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

Huge stone depressions which may have acted as an Incan agricultural experiment.

A promotional sun clock on the site of San Francisco's great raceway.

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

Arcadia is home to a haven for nature geeks and 80s TV lovers alike.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

The oldest stone house in Paris was built by its most famous alchemist.

The Flatiron Building's storied West Coast cousin is a lot more into religion.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

This historic Boston building has gone from personal estate to porn theater and back again.

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

The peaceful gravesite of a rugged wild west gunman echoes the touching story of his last days.

This sculpture is an instrument played by the swell of the seas.

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

This mysterious series of teeny guerrilla installations sheds a whimsical light on street art in Oakland.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

A mysterious stone embedded at the base of a historic Boston building.

Odd stone and concrete monuments in the "Poet of the Sierras" eclectic folly garden.