Restoration of castles began in the early twentieth century, with projects including the renovation of Duart Castle on Mull, and the complete reconstruction of Eilean Donan from a few fragments of masonry. The restoration movement grew after World War II with a fashion for renovating tower houses, including Oliver Hill's restoration of Inchdrewer Castle, near Banff in Aberdeenshire, in 1965. The restoration of tower houses and smaller castles continues, with recent examples including Fenton Tower in Lothian and Ballone Castle near Portmahomack. Historic Scotland have launched a "Scottish Castle Initiative" aimed at encouraging private investment in the restoration of Scotland's castles, including a register of potential restoration candidates. Despite these efforts, a number of castles remain on Scotland's Buildings at Risk Register.