A neolithic tomb converted into a tiny chapel.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

The world's oldest bookshop still in operation.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

At this gas station in the middle of the desert, a convenience store has been carved directly into the rock.

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

A small section of Boise, Idaho maintains the unique culture and traditions of the Basque people.

Boise State's stadium was the first non-green football field in the world.

Jail from the 19th century that was built by inmates.

An overlooked and unassuming engineering marvel.

A cozy bookstore is tucked within an old gold mine shaft beneath the cafe and ice cream shop.

A hotel and restaurant serving as the mecca of kitsch.

These mammoth-yet-narrow crevasses in the Earth are perfect for taking an otherworldly swim.

Quito's historic, main square dates back to the 16th century.