Lihou is a small tidal island located off the west coast of Guernsey, accessible on foot via a causeway at low tide. It's essential to check the tidal times, as the causeway disappears during high tide, which can make returning to the mainland impossible for several hours. The enchanting island offers tranquility and natural beauty with its rich birdlife and historic features, such as the ruins of a priory. Generally, visiting Lihou is free, though donations for maintenance are appreciated, and tours aren't necessary since it's easily navigable solo. The best time to visit is during warmer months when the weather is mild and the causeway is more reliably passable. Allocate about half a day for your visit, including walking to and exploring the island. Always remember to pack waterproof shoes and check local guidance for any access restrictions.