The walk around the Ciutadella (Fortress) is a must for anyone visiting Roses. It was declared a historic-artistic site in 1961 and displays remains of different ages and rules. The military fort with the monumental Porta de Mar (Sea Gate), covers an area of 131,480 m² and was built in the Renais- sance style in 1543.

There is an important archaeological site within the fort where we can find the remains of: the Greek-ruled city of Rhodes, founded in 776 BC by the Rhodians; the Hellenist district from the 4th to 3rd centuries BC, the town’s greatest moment of prosperity; the Roman town dated to the 2nd century BC to the 6th century AD; the Romanesque Lombard Santa Maria monastery from the 11th century and findings from the 19th century.