Nine centuries-old fortresses guard the walls of this medieval Romanian city.

A medieval church built up to defend its village.

This is the birthplace of Vlad the Impaler Vlad III Dracul.

Despite the name, this 16th-century structure in Galway wasn't built by the Spanish.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Every equinox this Maya pyramid puts on a spooky ancient light show.

This small, yet notable, cable-stayed bridge was built to support tourism to a series of internet-famous pink lakes.

Its sunny hues are believed to have inspired the town's color palette.

Iconic red and white plaques show the creative names invented to navigate the city streets.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

See the rare bloom of the "Queen of the Night" cactus at one of the world's largest succulent collections.

A mythically themed self-built sculpture park.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

This eclectic Austin curiosity shop is home to all things strange and unusual.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Continuing the tradition of the dime museum in style.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

The prison where Hitler wrote "Mein Kampf," and 278 Nazis were later executed for war crimes.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

One of the most easily accessible examples of the rare 1960s UFO houses.

A fearsome dragon clings to a corner of Munich's city hall.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.