The bones of two medieval royal lions were discovered at the historic fortress.

A tribute to an explorer and naturalist often overlooked by history.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

Eighty million natural history specimens call this gargantuan museum home.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A naturally mummified 2,000-year-old man.

A quiet memorial to those who died saving others in the heart of the City of London.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

The ruins of a church destroyed by both the Great Fire of London and the Blitz, now turned into a peaceful garden.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

This outcropping was once home to a medieval monastery destroyed during the Ottoman conquest.

Legends of treasure and spirits flow from this this fairy tale-like oasis.

This 15th-century Serbian Orthodox monastery also contained a school for illuminating manuscripts.

A hidden stream deep in the mountains creates one of the largest tufa waterfalls in Serbia.

A tiny church on a man-made island in the Adriatic.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

One of the world's oldest olive trees, thought to be over 2,000 years old.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

Looming communist pillar with a Czech twist.

A series of playful yellow penguins share a serious message about the environment.

This spooky statue sits outside a famous Prague theater.

A memorial to the murdered Jews of Kaunas.