Started as a kitchen garden, now the second largest botanical garden in the world.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

Residing along a busy thoroughfare, this sculpture urges passersby to consider the future.

An engineering wonder at Pillnitz Castle protects a precious 230-year-old flowering shrub.

A moving and macabre World War I-era painting by the great artist Otto Dix.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

A unique hanging cable-car navigates through Dresden, the oldest suspension railway in the world.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

A historic fire call point.

A restaurant and observation deck built in a unique broadcasting antenna.

A slice of central Asia in the middle of Berlin.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

A 200-year-old tavern challenges guests to finish a glass of wine while hanging from a ceiling beam.

See the rare bloom of the "Queen of the Night" cactus at one of the world's largest succulent collections.

Vines grow up the metal bars in this public park created from an old machine factory.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

Once a sewer culvert, this road tunnel now offers cyclists and pedestrians a subterranean stroll under the C&O Canal.

A computer bug so primitive it was an actual insect.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

The oldest continuously operating fish market in the United States.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.