The final resting place of the author who gave us the Little Mermaid, the Ugly Duckling, and many more beloved fairy tales.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

The house where a Danish physicist discovered the connection between electricity and magnetism.

The only surviving piece of Copenhagen's 16th-century defensive wall.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

Copenhagen's celebrated theme park and gardens.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

Ancient Greek oracle of the dead.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

The world's first purpose-built motor racetrack was destroyed by the outbreak of two world wars.

Gothic tower where Lord Alfred Tennyson wrote the poem "The Sleeping Beauty."

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

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

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Where royalty waits in the height of luxury.