Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

Puffin enthusiasts flock to Europe's largest seabird cliff, which over one million birds call home.

This rusting remnant of the local herring industry is being given a second life.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

An archaeological treasure trove towers over the valley of Chiavenna.

This museum in a Paris apartment gives a unique look at the iconic French singer's life.

This strategic isle was once swapped between empires and almost entirely destroyed in a bomb explosion.

A scattered trail of street art adds a pop of color to the city's stark structures.

A preserved Nazi labor camp now has a Holocaust museum on site and memorials to the thousands that died while imprisoned at the camp.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

Walk through Czech history in Prague's largest graveyard.

The world's tallest bridge is also possibly the most elegant.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A temple to modernity, tucked away amid Barcelona's more well known museums.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

The world's first interactive human body museum also serves as a chair for a giant orange man.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The ruins of an abandoned crematorium haunt an eerie deserted German cemetery.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.