Hundreds of Roman amphorae are stored in an ususpecting underground parking lot.

This ultra-modern burial building would have stacked the dead like a giant filing cabinet.

A medieval military street hidden beneath a charming French fishing village.

Artist's eccentric property excessively decorated with found objects and work of his own.

This massive blockhead sculpture hides an entire library.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

Thousands of costumed dolls fill one of the world's creepiest museums.

The top of society once luxuriated in this world-class hotel, which continues to impress, even in ruin.

A beautiful discovery site of prehistoric burials.

Ernest Hemingway was the first to sign this colorful wall covered in thousands of celebrity signatures.

A slingshot from this delightful collection is awarded each year to someone who has "pulled metaphorical slings in favor of the weak and marginalized."

Abandoned medieval hill town.

The world's first underwater farm is home to more than 700 plants.

A wood-and-steel sculpture garden featuring an artful interplay of nature and machinery.

Claude Monet immortalized this medieval bridge in two of his paintings.

The location of the last witch trials of Italy, known as "The Salem of Europe."

An ancient rogue artist community hidden next to one of the world's most glitzy and glamorous cities.

There once was a man named Lear / Who found limericks so dear / His final resting space / Is an unusual place / Most people don’t know he’s here.

The "Mona Lisa" of funerary art.

This peculiar Italian elevator runs both horizontally and vertically.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

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

The wreckage of a tragic plane crash is on display at this museum devoted to a famous Italian conspiracy.