A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

A fountain standing as a testament to a doomed alliance.

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

This zoological museum began as the first great curiosity cabinet.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

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

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

At one of Berlin’s oldest churches, visitors can place mosaic tiles to help restore a medieval mural.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

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

This monumental work of art symbolizes the coming together of a previously divided city.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

One of downtown Berlin's last reminders of its Communist past.

Explore a remarkable 35-hectare sculpture garden located an hour outside of Lisbon.

Oddly enough, a pair of Wolfs funded the construction of this Little Red Riding Hood sculpture.

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

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

Daily jousts and dancing barrel makers in Munich's mechanical clock.