This modern sculpture looks out over the sea and amplifies sound from the inside.

Made up of 3,200 recycled glass bottles, this tree pays homage to Asturia's love of cider.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

This enormous censer uses a pulley system installed over 400 years ago.

Thanks to an acoustic anomaly, this unassuming stone bench has heard one hundred years of secrets.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

The oldest Roman lighthouse still in use.

Giant granite sculptures representing family on the northern coast of Spain.

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.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

The best-preserved ancient theater in the world.

Once described as the "Eagle's Nest," this ruined ancient city rests on a remote mountaintop.

This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

A Turkish ghost town abandoned in a population exchange with Greece.

The iconic blonde bombshell has a familial connection to this town in southern Norway.

A unique sculpture designed to outline humanity's reliance on oil.

In a city of wooden houses, this watchtower was vital for early fire detection.

An art project designed to encourage people to explore and investigate their surroundings more closely

Norway's oldest cathedral still in use.

This severely painted building has a twisted connection to the witch hunts of the 1640s.

One of the world's smallest functioning lighthouse boasts an unexpected connection.

A remarkable feat of Victorian engineering across the Firth of Forth.