Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

The final resting place of soldiers' loyal canine companions.

Largest lake in Great Britain measured by surface area.

The heads of two giant mythological water horses honor Scotland's horselord past.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

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

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The site of Paul Revere's historic two lantern warning.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

This abandoned Greek island was the last active leper colony in Europe.

This famous archeological mystery may be an ancient example of movable type.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The walls of the iconic dome are hollow and have a secret stairway.

Three prestigious academic collections come together to create a world-class natural history museum.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

This bridge was constructed from the rubble of the infamous Bastille.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

France's most famous cemetery, with some of its most curious tombs.

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