Rome is a beautiful city with many historic attractions. The Pantheon was built in 27 BC and rebuilt in the 2nd century AD, featuring a domed structure dedicated to all gods. The Colosseum is the most famous monument in Italy, originally called the Flavian Amphitheater, whose construction began under Vespasian in 72 AD and was added onto by his son Titus, opening in 80 AD with 100 days of celebrations. The Spanish Steps were built from 1721 to 1725 to connect two streets and get their name from a nearby Spanish Embassy, designed by architect Francesco de Sanctis.