Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Tubing through a cave lit with glowworms is a magical underground experience.

Budapest's Communist-era statues, banished to the suburbs.

An eerie reminder to the horrors of World War II.

This 14th-century temple is also known as the "Temple of the Golden Pavilion" for its gorgeous gilded reliquary hall.

Peace Park and the Atomic Bomb Dome.

A museum that chronicles the interesting and often dark history of the London docklands, once one of the major trading ports of the world.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

A gallery specifically dedicated to the botanical illustrations of a remarkable traveling lady.

Though it's not the largest, this one-kilometer outdoor market is reportedly the longest in Europe.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

The remains of the great moral philosopher reside in a university in London.

Its collection includes a broad array of social, geographic, graphic design, and political history.

This artist's home turned gallery/museum preserves the creator's love of "Eastern" influences.

A historic arboretum and non-conformist, non-denominational park cemetery.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

Hear the quietest sound from across the dome.

A cluttered and astounding collection of antiquities and curiosities.

The curios of pharmacist and collector Henry Wellcome.

A student driver's nightmare.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Hidden beneath the streets of London is a secret subway that only carried mail.