Alexander Hamilton’s creation caused quite a bit of controversy.

A daily replay of the experiment that proved the rotation of the Earth.

This legendary urban waterfall creates a dazzling display of rainbows.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

The fifth-longest natural arch in the world, and the longest outside China.

This stone complex marks the urban center of a lost civilization.

An Inca spa, military outpost or maybe… both?

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

A Christian monastery stands on what was once a holy Incan temple.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

Death rituals and sacrifice inside a Peruvian megalith.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Stay in the one time home to one of Scotland's most notorious gentleman's sex clubs.

An Anglo-Saxon cross inscribed with possibly the oldest written work of English literature.

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

One of Edinburgh's oldest pubs hides a 19th-century skittles alley in the back.

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

This single-track road rewards brave drivers with stunning Scottish scenery.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.