Réunion Island's highest point is a 2 million-year-old volcano and a paraglider's paradise.

An island made out of shells, including a cemetery.

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

This mountaintop observatory is home to one of the world's largest reflective telescopes.

This former royal palace with gorgeous gardens became the first museum in Morocco.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

The 400-year-old remains of the samurai invasion of Korea.

Buy your fish and have it cooked to order in this bustling, eight-floor seafood market.

The once highest point in China blends symbolic design with a kick of adrenaline.

Peace Park and the Atomic Bomb Dome.

A 14th-century European chapel sticks out of the facade of a Japanese hotel.

This stately bank building hides a spectacular star-studded ceiling.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

The best place in the world to buy tinned fish.

A hidden three-foot-wide house separates these two regal churches.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A little sculpture with a large wardrobe.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.