With skip the line entrance tickets and your expert guide, begin in 138 AD when the Castel was originally built as a funeral monument for Emperor Hadrian. Here you can still explore the mausoleum dedicated to him. Explore the Treasury room deep inside the castle, where it is said his ashes were originally placed before the 5th century sacking of Rome. As you make your way through the castle, visit the frescoed Papal apartments. Hear about...