Holy Trinity Cathedral in Addis Ababa is a significant historical and religious site, serving as the burial place of Emperor Haile Selassie I and other prominent figures. The site is generally accessible, though some older areas may present challenges for full wheelchair access; comfortable walking shoes are recommended for the grounds. While solo visits are possible, hiring a local guide is highly recommended to fully appreciate the rich history, religious significance, and cultural context. The cathedral is open year-round, with no specific seasonal restrictions, though visiting during major Ethiopian Orthodox holidays might mean increased crowds or restricted access during services. Expect an approximate entrance fee ranging from 200-300 Ethiopian Birr (ETB) for foreigners, with additional charges sometimes applied for photography; guide services are extra. A typical visit duration is 1-2 hours. Visitors should dress modestly, covering shoulders and knees, and be prepared to remove shoes before entering the main cathedral as a sign of respect.