Pettah's beautiful floating market was once a stinky canal in a sketchy industrial area.

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

Each summer, the migratory bats living beneath the bypass form "batnadoes" at dusk.

On a cornerstone of the City Museum is the head of a monstrous serpent stolen from an Aztec pyramid 400 years ago.

This castle ruin in the middle of nowhere is a gem for wildlife enthusiasts.

This macabre monument atop an ancient well gives a nod to a brutal episode in Scottish clan history.

At this cemetery, artists are invited to design their own gravestones.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

Hidden on a cobblestone street in Glasgow, a Czech Cajovna-inspired teahouse serves as a hangout for Bohemians.

A giant rooftop ride with unbeatable views of Matsuyama city, the nearby mountain ranges, and the Inland Sea.

Dedicated to a Bolshevik revolutionary, this museum is a true time capsule of the Soviet era.

The remains of an ancient city-state along the Silk Road.

This English medieval castle is where King John died of dysentery.

A mental health hospital dating back more than 139 years, now features a museum.

This magnificent abandoned hotel has long been haunted by its Nazi past.

Given just one more year to live, Conrad Schuck built his dream house in Bartow, Florida.

History, geography, and shamanism meet in this eye-catching monument to the greatness of three empires.

Crooked windswept pines give this old forest an enchanted and magical look.

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

A wealth of plants and horticultural curiosities fill this charmingly antique museum.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

This ruin in a suburban park may be the place where Shakespeare's "A Midsummer Night's Dream" was first performed.