Ostia Antica is an ancient Roman port city located near the mouth of the Tiber River. Founded in the 4th century BCE, it served as a crucial commercial hub for trade and military activities. The city features well-preserved ruins, including temples, baths, and a theater, showcasing the daily life and architecture of ancient Rome. Today, Ostia Antica is an archaeological site and a popular tourist destination. Visitors can explore its extensive remains, which provide insight into Roman urban planning and society. The site is often compared to Pompeii but is less crowded, offering a more tranquil experience of ancient history.