A miniature rainforest is growing inside of a Midtown Manhattan office building.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

This massive library holds what was once the largest book collection in the world.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

England's most notorious suicide spot.

The largest greenhouse in the world is home to over one million types of plants.

Science fiction's grandfather has a fittingly marvelous tomb.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Paris' linguistic guide to the international language of, yes, love.

Statue of death tucked in the University of Medicine courtyard.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

The largest stone moai on Rapa Nui.

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

Iceland's largest lagoon is home to stunning multi-colored icebergs.

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

The curios of pharmacist and collector Henry Wellcome.

This South London cemetery holds the remains of more than 15,000 people.

The ancient tomb acts as a calendar that keeps perfect time.

The oldest stone house in Paris was built by its most famous alchemist.

Weird wax anatomical models reside here, as do other anatomical specimens.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

A giant Troll lurks under one of Seattle's oldest bridges.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.