A historic casino where Dostoyevsky is said to have lost it all on a single spin of the roulette wheel.

The final resting place of the famed German pilot, the "Red Baron."

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

This tremendous timepiece was once the largest cuckoo clock in the world.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

This might just be the TARDIS of bookstores.

A daily replay of the experiment that proved the rotation of the Earth.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

The oldest surviving botanic garden in the United States.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

The final resting place of soldiers' loyal canine companions.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

360° views of the city plus five floors of optical illusions and hands-on science.

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

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

This heritage rail line meanders through Delaware’s Red Clay Valley.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.