The Spa at Atrium Hotel

"Add to that pieces of Diocletian's aqueduct out back, a spa pool with a panoramic view of the city, and a stand-alone dining destination, Restaurant Cardo, and you have the makings of a fine hotel"

"This modern glass and concrete building atop the ruins of an ancient Roman aqueduct offers a range of amenities, including a full spa, indoor pool, casino, large meeting rooms, fitness center, and a Mediterranean restaurant serving a free breakfast"