Caelian Hill, one of the famous seven hills of Rome, is located southeast of the Colosseum. It is known for its ancient ruins, including the remains of several important churches and villas. The hill offers a peaceful atmosphere, contrasting with the bustling city around it. Historically, the Caelian Hill was a residential area for the wealthy during the Roman Empire. Today, visitors can explore its archaeological sites, such as the Basilica of Saints John and Paul and the Church of St. Stephen in the Round. The hill is a popular spot for those interested in Roman history and architecture.