The destruction of the citadel of Nice on January 4, 1706, by the armies of Louis XIV after 54 days of bombardment exposed Castle Hill, which had always been a place of habitat and defense. Having become an open city, Nice then invented resort tourism. In the 1830s, King Charles-Félix of Sardinia ceded the 305 ft (93 m) high rock to the city to allow the construction of a public garden quickly nicknamed the cradle of the sun. In 1885, a large decorative waterfall was built on the ruins of the old castle keep. Fed by the waters of the Vésubie, it served as an overflow for the first water supply in Nice while offering a thrilling spectacle to walkers.