A quick 25-minute drive from Avani Muscat Hotel, you'll come across the stunning Sultan Qaboos Grand Mosque, which needs no introduction. Named after its leader, Sultan Qaboos, this mosque took 7 years to build in 2001. Covering a whopping 416,000 square metres, this mosque is said to be able to hold almost 20,000 worshippers at any given time. There is no question about the mosque's prominence in Dubai, as its interior is as beautiful as the exterior. The floor of the mosque is covered entirely in a Persian rug and it boasts a 14-metre tall Swarovski crystal-donned chandelier. This grand mosque has to be first on your list, and for good reason as it can be reached easily from any Omani restaurant in Muscat.