An architectural masterpiece, the grand mosque was a gift to Oman from the Sultan Qaboos to mark the 30th year of his reign. The mosque is massive and is surrounded by landscaped gardens, giving it the feel of a serene oasis. The second largest Persian carpet in the world can be seen inside the mosque; 600 women took over the course of 4-years to hand weave the intricately designed carpet, which was once the largest in the world. The main prayer hall is filled with beautiful geometrical designs and houses a magnificent chandelier. Non-Muslims are allowed to enter between 9 am to 11 am, and are required to wear clothing that covers their arms and legs. Women must cover their heads and wear loose fitted clothes. The grand mosque is situated near the outskirts of the city so if you're not sure how to get there, feel free to inquire with any of the Oman hotels if they organize tour guides.