Take a tour of The Duomo of Milan in Italy – part of the World’s Greatest Attractions travel video series by GeoBeats. This cathedral is one of the world's largest gothic cathedrals. The roof of the Duomo looks like a marble forest of spires, 135 of them. This enormously intricate church's first stone was laid in 1386 and was only finished in the 1800s. The roof of the Duomo is absolutely amazing, and can be accessed by visitors. There is no end to the things to see: subtle stonework, gargoyle rain-spouts and statues. This church has literally thousands of statues adorning its walls and topping its spires. The Duomo is a must-see for anyone in Milan who appreciates exquisite Gothic architecture.