A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

A plaque on the base of this statue holds a bewitching design.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The pile of books behind the dignified writer gave the statue a most undignified nickname.

This spire on an Austrian mountain is wrapped around a long spiral slide and has the world's tallest wooden observation deck.

The world's most important buildings shrunk to a tiny size.

The scars of World War II are preserved on its walls.

Go surfing on this urban wave, "hacked" by local surfers.

This tribute to the 16th-century composer is now an unusual shrine to Michael Jackson.

On high feast days, the entire blue-glass front of this modern church opens up to reveal the small wooden church inside.

A stairway to heaven, or to nowhere at all.

This massive statue is the personification of Bavaria and the first colossal statue of the modern period composed of bronze.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

A preserved Nazi labor camp now has a Holocaust museum on site and memorials to the thousands that died while imprisoned at the camp.

This lurid German fountain plots the sad course of marriage from dating to death.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Berlin's old airport.

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

Hamburgers are intensely proud of their tunnel beneath the river.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.