Is the Hassan II Mosque in Casablanca worth a tour?

Casablanca is a big working port city that many travellers find underwhelming after the imperial cities — but the Hassan II Mosque alone justifies a stop, and it is one of my favourite buildings in the country. It is colossal: one of the largest mosques in the world, with a minaret rising about 210 metres, making it among the tallest religious structures anywhere. It was completed in 1993, paid for largely by public subscription, and built right at the edge of the Atlantic, so part of the prayer hall sits over the water and a glass section of floor lets you sense the ocean beneath.

What makes it genuinely special for visitors is access. Almost every mosque in Morocco is closed to non-Muslims, so most of the time you admire from outside. The Hassan II is the great exception: it runs official guided tours that take you inside the immense prayer hall, which holds tens of thousands of worshippers under a retractable roof, surrounded by hand-carved cedar, marble, granite and acres of zellij and stucco produced by thousands of Moroccan master craftsmen. The scale and the craftsmanship together are simply staggering.

Be clear about how visiting works. You can only go inside on a scheduled guided tour — you cannot wander in freely — so check the day's tour times (there are usually several, in multiple languages, outside main prayer times and reduced on Fridays) and buy a ticket. Dress modestly, as you would for any religious site; you will remove your shoes for the prayer hall. The tour lasts roughly an hour and includes the hammam and ablution halls below.

Even if you don't take the interior tour, the vast plaza around the mosque, open to all, is worth seeing — especially toward sunset when the stone glows and waves break against the sea wall. For travellers flying in or out of Casablanca, I almost always suggest folding in a couple of hours here. It is the single best thing to do in the city, and the only place many visitors will ever step inside a Moroccan mosque.