This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

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

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

A massive explosion that leveled hundreds of buildings in the city of Leiden is remembered by a waterside plaque.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

Science meets wall art to highlight the beauty of famous mathematical equations.

A trio of red, white, and blue stones embedded in the streets of Leiden are markers of medieval territory and law.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

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

A market built atop boats is one of the few floating holiday markets in Europe.

This tiny tropical village was sick of anonymity so the locals made this sign, which actually changed the name of the town.

The floor of the oldest surviving synagogue in the Americas is entirely covered in sand.

Like something out of a pulp adventure, this abandoned plane wreck is slowly being retaken by the Caribbean jungle.

The mouldering manses of wealthy colonials still pock the streets of a Curaçao neighborhood.

Shipwrecks, ruins, and turtles are all that remain on this haunting Caribbean ghost island.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Bridge that died in war and was resurected.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

This abandoned airplane hanger is said to have once been a top secret launch facility.

An apparition of Virgin Mary in Herzegovina.

Used as an example in one of the first dictionary entries for "museum" in 1706.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.