Three columns of volcanic rock shoot out of the ocean.

A tiny village church in dramatic surroundings.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

This statue pays tribute to the iconic musician in the place where he recorded his final studio album.

A fortified palace in the shape of a ship on the Thiou river.

Every year, a sparkling cave is sculpted in the icy heart of a glacier.

An icy lake tucked among jaw-dropping alpine panoramas.

This Swiss cemetery is reserved for people who died in climbing accidents.

An ancient ossuary in Rouen.

Lego blocks now patch Rouen's WWII scars.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

Giant topiary dog once played a role in a terrorist bomb plot.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

The oldest Roman lighthouse still in use.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

The world's largest wooden structure.

Dead weights honor the dead of Portugal's fishing industry.

Perhaps the most spectacular grotto along the Algarve coastline.

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

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