Which Roman emperor built the Baths of Caracalla in Rome?

The Roman emperor who built the Baths of Caracalla in Rome was Caracalla.

Construction began under Emperor Septimius Severus and was completed under his son Caracalla, with the complex opening in 216 CE. The baths were among the largest public bathing establishments in the Roman world and could serve thousands of visitors at a time.

The complex included hot, warm, and cold bathing rooms, exercise areas, gardens, libraries, and monumental decoration. Its enormous brick-and-concrete structures demonstrate Roman engineering and the imperial use of public amenities to display wealth and authority. The site is now an archaeological landmark in Rome.