Tower house

The Round Towers at Nantyglo, Wales, were built by industrialists Crawshay and Joseph Bailey, who, by the early 19th century controlled much of the iron resources in the region, including the massive iron works at Nantyglo. Fearing that their workers would one day rise against them, in 1816 the Baileys built the last fortified tower in Britain as a place of refuge against a potential worker's revolt: