The dome of the pantheon is open to the weather and forms the only source of sunlight inside. There are drainage holes in the floor for any rain!
Yet another architectural spectacle of Rome. The pantheon was built as the “temple to all gods”. Its amazingly well done inside with a 10 M hole in the roof which but never lets in rain.
Very interesting Roman work of engineering, and well preserved monument housing the tombs of important Italian kings and artists. Situated on a nice piazza.
'M. AGRIPPA L. F. COS. TERTIUM. FECIT'
The Pantheon is a remarkable dome with a 10 m hole ( oculus ) in the roof.
Pagan temple turned church, the Pantheon is an architectural wonder. The dome's diameter and height of the walls are nearly equal and make for an usual sight.
The grandest monument of Roman antiquity, built by Hadrian in AD 128. The immense cupola was until 1960 the largest freestanding dome in the world.
Also you must absolutely visit the Pantheon very near from the Piazza Navona. It's a Roman temple built by the Emperor Adriano in the year 118 b.C.