The Suasa Regional Archaeological Park is located near the town of Castellone di Suasa. Since 1988 the site has been at the center of systematic archaeological research by the University of Bologna and the Superintendence for Archaeological Heritage of the Marche. The archaeological area traces the ancient Roman history of the city of Suasa. The park features an amphitheater, the forum, the Coiedii domus and the republican domus. The Domus dei Coiedii is one of the richest houses of an authoritative family, the gens Coiedia. It contains numerous mosaic floors, all of the highest quality and in excellent state of conservation. The most interesting section is certainly the forum and the main streets of the city. The forum consists of a large central square with a colonnade on which rectangular rooms open up. The forum is a unitary complex, built at the beginning of the 1st century AD, after having artificially raised the foot traffic level by adding large quantities of soil mixed with river gravel; it remained alive for many centuries, probably until the city was abandoned in the sixth century. The Amphitheater is elliptical in shape and has two main entrances with various tiered bodies. The archaeological area is now accessible to the public and it is possible to take advantage of guided tours.