The Cathédrale de Monaco, also known as Saint Nicholas Cathedral, is a prominent Romanesque-Byzantine landmark accessible year-round, typically free of charge, though donations are appreciated. Visitors can easily explore the cathedral independently, with no seasonal restrictions beyond occasional closures for religious services or special events, making it advisable to check official hours. A typical visit lasts between 30 minutes to an hour, allowing ample time to appreciate its architecture and the tombs of Monaco's former princes, including Princess Grace and Prince Rainier III. The location is generally accessible, though the surrounding Monaco-Ville area has some steep paths; inside, accessibility is usually good. Modest attire is recommended as it is an active place of worship, offering a serene and historically rich experience for all visitors.