The Sheikh Zayed Grand Mosque in Abu Dhabi is a stunning architectural masterpiece and one of the world's largest mosques. It welcomes visitors of all faiths, offering free admission and guided tours. The mosque is generally accessible, with provisions for visitors with disabilities. Modest dress is required (available for loan), and appropriate attire rules are strictly enforced. Photography is permitted in designated areas. A visit typically lasts 2-3 hours, and it can get crowded, especially during peak tourist season (November to March) and prayer times. Visiting solo or joining a free guided tour are both great options. Consider visiting early in the morning or late in the evening to avoid crowds and witness the mosque under different lighting. While entry is free, transportation and optional amenities like souvenirs will incur costs.