Zaouia Moulay Idriss II - Fes, Morocco 

This shrine is dedicated to Idris II of Morocco, the founder of the city of Fes. Building of the shrine began in 1717 and ended in 1824, and it has become one of the holiest sites in the city. The shrine has a functioning mosque and a tomb used for funerals. By the entrance, locals sell fruit, vegetables, objects and candy used for worship inside. 

Many Muslims make the pilgrimage to the tomb, in hopes that it will bring them good luck. For many women, it is hoped the a trip to the shrine will help with their fertility. 

Ben Youssef Madrasa - Fez, Morocco

This theological college was founded in the 14th century and is an excellent example of Marinid architecture. As well as being an educational institute, it also functions as a mosque. It is one of the only religious sites in Morocco that is open to non-Islamic visitors.