The Fortress of Santa Caterina is a historic military structure located in the town of Civitavecchia, Italy. Built in the 16th century, it was designed to protect the harbor and the surrounding area from potential invasions. The fortress features robust walls and strategic positioning, making it an important defensive site during its time. Today, the fortress stands as a testament to Renaissance military architecture. Visitors can explore its well-preserved structures and enjoy panoramic views of the Tyrrhenian Sea. The site also serves as a cultural venue, hosting various events and exhibitions throughout the year.