Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

32,000 tiny soldiers are posed in 23 historical settings.

This religious complex carved into a cliff is steeped in legends of miraculous stags and the Holy Grail.

This narrow path was cut right into a French mountainside to feed the country's early naval expansion.

A former plague hospital turned medical museum.

The works of poetry's biggest names grace the walls of the city of Leiden, all carefully painted by hand.

A curious collection dedicated to human and animal anatomy and pathology.

Colorful and chaotic stacked hotel in North Holland.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

This unattributed sculpture in Amsterdam is hiding in plain sight.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

Dozens of padlock-trees along the Moscow River.

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

Russian researchers who have been excavating ancient squirrel burrows may have brought a 32,000-year-old plant back to life.

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

This Russian diner is staffed entirely by twins.

A model village fit for an emperor.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

Eccentric sculpture garden brings Basque mythology to life.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.