The Kowloon Mosque on Nathan Road in Tsim Sha Tsui is one of Hong Kong's most prominent mosques and worth visiting for its beautiful white marble architecture. Non-Muslims are welcome outside prayer times, usually 9-11am and 2-4pm daily.

Remove shoes before entering, dress modestly (long sleeves and pants), and women should cover their hair. The interior features intricate Islamic calligraphy and geometric patterns. Staff are friendly and happy to explain the architecture and local Muslim community.

It's right on the main tourist strip but most people just walk past without noticing. Free to visit, just be respectful of worshippers and photography rules.