Mont-Saint-Michel Abbey, a UNESCO World Heritage site, is a magnificent medieval monastery perched atop a tidal island. Accessibility involves walking or shuttle from parking areas to the island, followed by a steep climb through the village and numerous stairs within the Abbey itself, making it challenging for those with significant mobility issues; limited accessibility options exist. Visitors can explore solo with audioguides or join guided tours for deeper historical insights. The Abbey is open year-round, typically closing only on select public holidays (Jan 1, May 1, Dec 25), with opening hours varying seasonally; checking tide tables is crucial for broader island exploration, though the main access bridge is generally always available. The approximate cost for Abbey entry is around 11-13 Euros for adults, plus parking fees for the island's entrance. A typical visit duration for the Abbey alone is 1.5 to 2 hours, but exploring the entire Mont, including the village and ramparts, can easily take 3-4 hours or a full day. Useful tips include wearing comfortable walking shoes, booking tickets online to skip queues, and visiting early morning or late afternoon to avoid peak crowds and experience the unique atmosphere.