Final resting place of the immigrant who brought artificial seltzer water to America.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Home to three historic ships from the age of Vikings.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

These spooky and unusual stone formations create an underworldly landscape.

Climb inside an iron crystal magnified 165 billion times its normal size.

Theme park featuring miniature replicas of European monuments.

A little sculpture with a large wardrobe.

'The Letters of Utrecht' lays out a ribbon of poetry one letter at a time, with no final verse in sight.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

The "Prussian Versailles" that is as glorious today as when it was built.

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

The last king of Poland was interred in this church nearly 200 years after his death.

This bell stars in a tragic love tale and is said to make wishes come true.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

One of the world's largest collections of medieval religious art.

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.