A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

See gorgeous frescoes at this modest Byzantine place of worship.

One of the most photographed locations in the entire city.

A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

The painted and decorated towers of this Hindu shrine were once the tallest structures in one of the oldest cities in India.

This precariously balanced boulder is said to be a hunk of stolen butter dropped by the gods.

A startling, centuries-old subterranean marvel hides in plain sight.

An old department store turned Nazi prison turned artist commune.

The city of Parma's cathedral is home to one of the greatest illusionistic frescoes of the Renaissance.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

A striking symbol of the Bulgarian capital.

An image of the legendary saint stands in the shadow of a cathedral she liberated.

Founded in the 4th-century, the town of Pernik plays host to the Surva Carnival⁠—a magnificent display of masked Kukeri dancers.

Through the colossal entrance to this cave you'll find limestone tubs and an underground waterfall.

This abandoned Slovenian military barracks has become a punky-political art squat.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

Only the facade of this house was built so a father could fool his son.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

Bacteria and algae give the salty water its bubblegum hue.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

A unique Tuscan hideaway acts as an art mecca as well as a hotel.

A schoolhouse and chapel are all that remains of this alpine village.