On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Cold war icon and onetime "hole" in the iron curtain.

Op-art architecture designed for happiness.

The Habsburgs' royal collections of art and wonders.

Baroque celebration of the end of the Great Plague of Vienna.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

One of the oldest living oak trees in the Southeast.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

An apocalyptic seismic event creates a deadly chain reaction that ends with a 6-mile long lake developing within weeks.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A Civil War Museum with some notable medical antiques.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

Giant, friendly pelicans in Central London, the most unlikely of places.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

This playground sculpture of an icon from the past is dedicated to the children of the future.

An astounding collection of medical specimens, including bits of President Lincoln.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

Home to items never before seen by the public.

At 207 feet, one of the world's longest continuous escalators.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

A fantastic castle rumored to be the birthplace of King Arthur.

Macabre astrological automaton clock dating to the late 1400s.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.