The castle of Lerici, located overlooking the sea on a promontory at the end of the village, was built in 1152. It was founded as a watchtower with the aim of protecting and defending the Ligurian territory from external attacks. Today perfectly restored, over the centuries had to undergo several transformations by the maritime republics of Genoa and Pisa, which contended the castle for its strategic position.Inside is the Geopaleontologic Museum, opened in 1998 and dedicated to Ilario Sirigu (boy who at the age of twelve had discovered important fossils in the surrounding area in Lerici), which contains the fossil footprints of dinosaurs, fossils of plants and insects dating back about 220 million years ago. The museum is part of the Pangea Network, which is responsible for merging the financial resources of the museums.The castle can be reached through a seafront promenade lined with rocks useful to sunbathe and to rest in front of the sea view, a favourite destination for tourists and citizens of the country and the surrounding area, relaxing and well cared for. During the course you can meet children who stop in the different playgrounds, groups of teenagers who find themselves to enjoy the ice cream of one of the many famous ice cream parlours or to have a good drink in the many rooms overlooking the sea. Whether in winter or in summer it is always pleasant to enjoy the sea of Lerici by taking a walk, perhaps enjoying some specialities of the place.