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

This Danish castle is supposedly haunted by a woman too independent to not be a witch.

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

This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

The castle still holds traces of the abandoned Roman fort it was built atop.

A Byzantine church containing the holy remnants of three saints sits atop the site of an ancient temple.

Secret refuge and museum of the Duke of Florence.

Malaysia's floating mosque.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

The last Viking king of Denmark is buried inside the crypt of this cathedral.

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

The Swedish flag over this small naval fort signals that the nation is at peace.

It houses the remains of a 17th-century version of the Titanic.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

This cheese shop also houses a museum devoted to Dutch dairy.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

A floating cat sanctuary on an Amsterdam canal.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

Christ's blood preserved in a Belgian town.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

This ancient Egyptian obelisk still bears the wounds of World War I.

Hear the quietest sound from across the dome.