A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

This Manhattan skyscraper is a reminder of the brief but glorious age of urban air taxis.

Vibrant paintings stretch across 600 feet of derelict railway.

This macabre monument atop an ancient well gives a nod to a brutal episode in Scottish clan history.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

From here, the loch appears to take the shape of mainland Scotland.

The solitary cairn marks a mysterious death that's still controversial more than two decades later.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

Not only does this shop sell mokorotlo, the traditional hat of Lesotho, the building is shaped like one.

From atop a hill at the center of Cape Town, a cannon has been signalling the time since 1806.

This remote Scottish island has the only round church in the nation.

Not for the faint of heart, this long pedestrian bridge rewards those who brave the wobbly walk with a beautiful view.

Sloth rehabilitation center in the jungle of Costa Rica.

Known as the "Grand Lady of Jersey City,” the city's first racially-integrated hotel was owned by a preacher who was, depending on who you ask, a cult leader, civil rights pioneer, or the manifestation of God.

The infamous Boston Mob ran rackets from an office here in the 1970s.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This impressive Boston holy house is the American mecca for Christian scientists.

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

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Ice cream stand, snack bar, and time capsule of milk conveyance.