An 18th-century lighthouse built on a 16th-century castle is now a monument to the maritime beacons of Scotland.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

These old World War II fortifications have been transformed into an unusual equine attraction.

Four alabaster giants contemplate the tides on the shore of Denmark.

Not many houses move across borders, this one did it twice.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

The largest timber structure in Europe.

One of four sister bronze sculptures dedicated to the widows and orphans of an 1881 tragedy.

These upturned herring boats make nifty storage sheds for fishing goods.

This tidal island, a sacred site in early English Christianity, was the target of a notable Viking invasion.

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

This enormous, elaborate tomb looks oddly out of place next to a suburban Edinburgh bowling club.

The medley of artwork tells the history of this Scottish town.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

A multi-storied painting that depicts the area's rich and diverse maritime history.

A succession of eerily contemplative iron figures lead from a Scottish museum to the sea.

A shiny sculpture celebrating the mighty mollusk.

This unique building in the main square stands out among the city's typically Baroque architecture.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."