Astronomical observatory above Lake Titicaca.

The first and only carousel with a lineup entirely of insects.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

America's most famous piece of self-built architecture.

Ancient pueblos built into the base of a natural canyon wall.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

A mysterious spirit totem at the edge of Navajo lands.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

A stealthy Apache hideaway that became the haunting site of a mass grave.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

A rare example of World War I trenches from the British front.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

The world’s first museum dedicated to exploring human rights unleashed a wave of controversy.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

A garden in Lisbon filled with giant porcelain creatures.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

This charming candle shop has been in business since 1789.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

Picturesque intersection of witchcraft and ancient Christianity.

A unique seaside cave where Aleister Crowley faked his own death.

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

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