Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

This museum is home to one of the biggest collections of printing press technology—plus a river view.

Building owners can take out tiles for free at this repository for historic building materials.

Ancient catacombs form the foundation for this Rococo orgy of a church.

Elaborate tile work in this railway station tells the story of Portugal.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A hidden three-foot-wide house separates these two regal churches.

The stunning interior of this Gothic church is covered in ornate gold details.

A well-restored ancient archaeology site gives a real feel for life during the Roman age.

A celebration of solstice followed by a fiery purging of evils.

For nearly 50 years this airplane that crashed during World War II remained missing in the remote Australian backcountry.

A breathtaking and biodiverse wilderness in the mountain setting of Ernest Hemingway's "For Whom the Bell Tolls."

With a floor made of thick glass, this observation deck offers a full view of Sunwapta Valley's mountains and rivers.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

An oddly conical beacon perched atop beautiful Irish cliffs.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

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

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

One of the largest single-span stone-arch bridges in the Balkans looks like something straight out of a fairytale.

Where commuters walk through remnants of an ancient Greek necropolis.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

Seventeen oak trees sprout from the roof and walls of this tiny chapel without any visual evidence of roots.

Cave on extinct volcano, once home to famous mathematician Pythagoras.