If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

This elegant arc of a waterfall marks a religious turning point.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

Sweden's "good old days" painstakingly re-created in a model village.

This "second" cemetery represents New Orleans' attempt to keep cholera at bay.

A snapshot of the city's fascinating voodoo culture.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

A monument celebrating the idea of reaching inaccessible places.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

Where manatees are the snowbird vacationers in these balmy Florida springs.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

An oversized, oddly designed pedestrian overpass has drawn comparisons to a commode for pachyderms.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

The stones of this formerly witch-obsessed castle were used to build a church.

The last bastion of Roman presence north of the Alps looms over a German town.