St. Patrick's Cathedral in Dublin is a must-see, steeped in history and stunning architecture. It's generally accessible, though it's best to check for specific access needs in advance. A solo visit allows for independent exploration, while guided tours offer deeper insights into the cathedral's past and features. Opening hours may vary seasonally and for special events, so verifying before you go is recommended. Expect an entry fee (approximately €8-€10 for adults), and allocate around 1-2 hours for a thorough visit. Photography is usually permitted, but flash may be restricted. Dress respectfully when visiting.