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

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Public access to clean drinking water was an instant hit among the masses.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

This chimerical bridge/tunnel appears to dead end right into the sea.

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

Known as one of the most climbed mountains in the world, this barren peak is permanently bald thanks to an anti-wolf fire.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

A remote crossroads honoring a fallen talent.

The rocks in this arid basin leave trails of movement behind them.

Scattered throughout London are ancient remnants of the city's former bounding wall.

An unusual round church in London with a Templar past.

One part local history, 99 parts gruesome haunted house.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Giant, friendly pelicans in Central London, the most unlikely of places.

This one has sailed five times as far as Sir Francis Drake's famous ship.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

3,200-square-foot mural inside Dartmouth Library depicts the history of America with images of human sacrifice, ancient gods, and other unspeakable terrors.

Maybe the only missile installed in a public park, this Cold War leftover was one of the first to carry a nuclear warhead.