Roman
Auxiliary forts and the roads that linked them.
Site · Roman auxiliary fort
Y Gaer, Brecon
A cavalry fort of about AD 75, excavated by Mortimer Wheeler in the 1920s, and the best upstanding Roman masonry in Powys.
Site · Roman auxiliary fort
Castell Collen
A Roman fort above the Ithon that was made smaller partway through its life, and the reduction is still visible in the earthworks.