This 17th - century monastery - turned - wellness - center in Quebec's old walled city once housed 225 nuns. (travelandleisure.com)
Morocco's second largest city is divided into distinct parts, including the typical old walled city (Fes - el - Bali) and a French - built new town area (Ville Nouvelle). (greatrail.com)
The 800 - year - old walled city in Tulum boasts panoramic views of the ocean and is easy to reach. (luxuryretreats.com)