In the sandstone labyrinth

At the Sultan Qaboos Mosque in Muscat: It is considered one of the most important buildings in the country and one of the largest mosques in the world.

The construction of the complex was decided by Sultan Qaboos in 1992. After a limited architectural competition, construction work began in 1995 and was completed in 2001 with the ceremonial opening. It has since been named after the builder.

The entire complex was built from 300,000 tonnes of Indian sandstone and covers a total of 4 hectares. It consists of a large men's prayer hall, a smaller women's prayer hall, five minarets (symbolising the five pillars of Islam), two large archways, an Islamic information centre and a library. | Oman

source: Wikipedia