A portal into the bricked up canal that runs through the heart of Washington D.C.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

A line of blue paint marks the route of the inaugural parade.

The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

Three columns of volcanic rock shoot out of the ocean.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

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

This stunning concert hall has become a symbol of Iceland's national recovery.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

The trials and tribulations of marking Poe's grave.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

A much-maligned monument to teetotalism.

Every drop of D.C. tap water flows through this old waterworks.

This area was once known for being a lawless haven for rough-and-tumble sailors, earning the maritime-themed nickname "the black sea."

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The Boston square dedicated to the dark poet who was born nearby.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

The humble horn finally finds a place in the sun.

The birthplace of America's favorite fruit-flavored mystery dessert.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

Cat art as far as the eye can see.