A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

This abandoned viewing platform has become a monument to unnecessary government spending.

This architectural oddity is an oasis of green on the outskirts of Valencia.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

On this romantic tidal island reachable only at low tide the tomb of a famous French writer overlooks the sea.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This demon atop the Notre-Dame de Paris looks utterly bored.

The celebrated eyesore created by starry-eyed sweethearts.

The narrowest street in Paris.

This modest marker near Notre Dame identifies the very center of Paris.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Notorious artist squat renovated into legal studios.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The designated Jewish quarter in Fez dates back to the 15th century.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

At this faithfully preserved medina off the Moroccan tourist circuit you can walk through six centuries of history in one day.