Abu Dhabi, the capital of the United Arab Emirates, sits off the mainland on an island in the Persian (Arabian) Gulf. Its focus on oil exports and commerce is reflected by the skyline’s modern towers and shopping megacenters such as Abu Dhabi and Marina malls. Beneath white-marble domes, the vast Sheikh Zayed Grand Mosque features an immense Persian carpet, crystal chandeliers and capacity for 41,000 worshipers. One of the most important architectural landmarks is the Sheikh Zayed Mosque. This is arguably one of the most important architectural treasures of contemporary UAE society—and one of the most opulent in the world. It was initiated by the late president of the United Arab Emirates, HH Sheikh Zayed bin Sultan Al Nahyan, fondly thought of as the father of the UAE. Abu Dhabi has more than 2,000 well-maintained parks and gardens and more than 400 kilometres (249 miles) of coastline, of which 10 kilometres (6 miles) are public beaches.