Dine amidst exotic plants at this former royal greenhouse.

Coast along one of Japan’s mountain railways for coveted views of magnificent hydrangeas.

Double spiral staircases are not unheard of, but they are very rare.

The Hanshin Expressway goes right through its 5th, 6th, and 7th floors.

One of only two pod-shaped homes designed by Frank Lloyd Wright.

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

An outstanding piece of retro Sci-Fi architecture built into a sacred mountain.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

The only diamond mine in the world where you can keep what you find.

The cedar tree in Highgate Cemetery earned its title by accident.

The world's largest ginkgo tree contains a hollow so large a man once lived in it for two years.

A comprehensive collection of bonsai set in a beautiful campus.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

This isolated Japanese mountain village untouched by time showcases unique and stunning traditional architecture.

This modern labyrinth lies in the shadow of a ruined medieval castle.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

This stunning 15th-century royal hill fort preserves the age of chivalry in Rajasthan.

Latvia's symbolic mountain-shaped national library is home to millions of cultural tomes.

An ancient octagonal weather station named for the eight Greek gods of wind.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

A railway bridge leading nowhere stands lonely in the middle of a meadow.