Hammam bathhouse beneath the Hassan II Mosque, Casablanca, Morocco (© roevin/Flickr/Getty Images)

【January 14 2014】The ornate hammam – a spa and bathhouse akin to a Turkish bath – of the Hassan II Mosque in Casablanca, Morocco, underscores the idea of cleanliness as a central part of religious practice. Water itself is a recurring motif in the mosque's design, with 41 fountains in the courtyard alone. But perhaps most remarkable is the Hassan II Mosque's glass floor, under which the waters of the Atlantic Ocean ebb and flow near the shore of the Moroccan city.Explore breathtaking Gallery from the HuluTrip homepage over the past 5 years..