Saint Agatha Tower, also known as the Red Tower, is a huge fortified watchtower in the heart of Mleiha. It is one of the most important historical monuments in the city, as it was built in the years between 1647 and 1649. The landmark consists of a square-shaped structure and 4 towers on each corner of the square. The tower is located on a high peak at the northern end of the city, and from above you can get majestic views of the Mediterranean and the port.