This 22-acre botanical garden is home to the largest collection of rhododendrons in the world.

Japan's largest area of "pink moss" turns the hillside bright pink every spring.

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.

This little valley along Highway 1 is engulfed by thousands of lilies during the spring season.

In Lago Superiore, the largest expanse of lotus flowers outside of Asia is hard to miss.

Each spring this woodland floor is carpeted with purplish flowers as far as the eye can see.

Named for a self-taught botanist who cataloged hundreds of native plants, this garden continues her work of preserving California plant life.

Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Spend the night in this former asylum for the incurably insane, which claims to be one of the most haunted places in the United States.

Italian horror legend Dario Argento’s own shop hides a sinister museum-dungeon in the basement.

The only residents of this abandoned housing development full of identical castles are stray cats and dogs.

This ancient walled garden turns fog into food.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

An architectural marvel that dates back to the zenith of Indian architecture.

This large, circular tomb is the final resting place of the first emperor of Rome.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

A monument to Lenin has been transformed into a statue of everyone's favorite black-helmeted, fool-choking Sith Lord.

The ruins of a 2,000-year-old Roman fishing village perched on one of the best beaches in Spain.

This wondrous hideaway is suspended in a bamboo forest above a sanctuary for rescued llamas and alpacas.

Inside this church is an obscure piece of art carved by the famous Alice Liddell.

A cheeky architectural easter egg.