The hallowed ground of one of the worst atrocities in United States history.

A non-stop elevator ride in Vienna's city hall.

Some of the last remaining relics of one of World War II's most important invasions.

A map store filled with original Cold War era Russian maps of the world.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Paris' linguistic guide to the international language of, yes, love.

This demonic monument commemorates a carving destroyed in World War II.

The mirrored section takes the shape of Hebrew characters when viewed from above.

The longest staircase lock in Britain.

The ruins of a world-renowned medieval hospital.

This impressive chasm is one of the longest natural underground cavities in the world.

Built in 1547, these ruins lie on a rocky promontory in Ballintoy jutting into the wild ocean waters below.

Ireland's most northerly island is hauntingly beautiful. Its lighthouse was the last glimpse of home for many Irish emigrants bound for the U.S.

A lone lighthouse on the wind-swept shores of the cape.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

The ruins of a 15th-century tower house.

A rare example of a Lowland broch.

Israel's premiere solar energy research facility provides energy to nomads.

This historic rec center in the heart of Israel is a bastion of peace and togetherness.

Dozens of elegant ceramic tiles decorate these ancient walls, each displaying the Lord's Prayer in a different language.

On holy holidays, Israel's second president used this room atop Mount Zion as a refuge to read the Torah.

Oldest Protestant church in the Middle East, designed to resemble a synagogue.

An autonomous community living in the southern Negev desert.

A geometric jumble of homes.