The term HOME OF THE SULTAN QABOOS GRAND MOSQUE is solved by the four-letter word OMAN. OMAN is an Arab country located in the southeastern coast of the Arabian Peninsula. It is bordered by the United Arab Emirates, Saudi Arabia, and Yemen. Sultan Qaboos Grand Mosque is a major landmark in OMAN and is home to the Sultan Qaboos bin Said Al Said, the ruler of OMAN. The mosque is known for its grandeur and is a popular tourist attraction.