Tangier's 17th century fortified residential quarter, or Kasbah, is a place of arcades, winding alleys and hidden terraces, where it is possible to wander among the wealthy homes and sometimes manage a peep behind the unprepossessing facades, enjoying views of the medina and the bay. The Kasbah mosque features an interesting octagonal minaret, and stands in the mechovar (parade ground). Visitors are welcomed at the Sultan's Gardens in the Rue Riad Sultan to the north of the mechovar, where they can watch local craftsmen at work and sit awhile on the terrace of the Moorish café Le Detroit. On a clear day it is possible to see the Spanish city of Tarifa about 18 miles (30km) away.