Packed with geological formations, an ancient river, and taxidermied seals, this overlooked coastal cave system is worth a spelunk.

A breathtakingly steep set of stairs is carved directly into the face of the sea cliffs of Bonifacio.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

A stone monument acknowledging Scotland's right to have a separate Parliament from the one in Westminster.

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

Regency-era excess on the English Coast.

This modern artwork, inspired by the Bayeux Tapestry, tells Battle's early history following the Battle of Hastings and the Norman Conquest.

Breathtaking and huge 430 year old maps of Italy.

This ancient market is often referred to as the oldest shopping mall in the world.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

Pompeii's less famous neighbor is still revealing her secrets.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

Ancient snack bar of the Roman Empire re-opened.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

One of the world's most complex timepieces.

Half-hidden by grassy slopes, this striking Spanish colonial fort is now a museum of underwater archaeology.

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

At least seven hues of blue and turquoise make this freshwater lagoon unique.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

The titular "little arch" near this Italian resort is one of the most popular diving spots in the country.

A colossal sculptural lion built by the same man who designed the Statue of Liberty.

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.