City Walls, Marrakesh
Concierge.com's insider take:
Hop into a horse-drawn calèche for a tour around the city walls of the Medina. First constructed in the 12th century, these form a neat circuit of six miles punctuated by about 200 towers and ten main gates. Made of pisé, the fortifications possess a pinkish tinge and glow beautifully in the setting sun. A complete whirl around takes the best part of an hour; prices are fixed by the municipality and are posted beside the carriages, which wait in line on the north side of Place de Foucault (just follow your nose).