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 Roman camp at Caerleon c. 75 Caerleon
CADW
 
 Agricola subdues Wales 77
 
 The Celtic tribes are driven west into Cornwall and Wales by the Anglo-Saxons c. 550
 
 Offa builds dyke between England and Wales c. 780
 
 Rhodri rules in Wales 878
 
A Celtic cross commemorates a king of southwest Wales c. 1035 Carew Cross
CADW
 
 Harold loses at Hastings 1066
 
 William I orders a keep to dominate London 1066
 
A companion of William I begins a castle in Wales c. 1067 Chepstow Castle
CADW
 
 William I builds a stone keep at Windsor c. 1067
 
 Cistercian order founded c. 1098
 
 Tintern Abbey founded by Cistercians 1131 Tintern Abbey
CADW
 
 Llewellyn is called prince of Wales c. 1220
 
 Llewellyn ap Iorwerth builds castle at Dolbadarn c. 1225 Dolbadarn Castle
CADW
 
 English acknowledge prince of Wales 1267
 
 Uprising by prince of Wales 1282
 
 New castles to subdue the Welsh 1283 Caernarfon Castle
CADW
 
 English prince of Wales 1301
 
A Welsh bishop constructs himself a palace c. 1330 St Davids Bishop's Palace
CADW
 
 Robert Smythson completes Longleat 1580
 
A leading citizen of Conwy completes his new town house 1585 Plas Mawr, Conwy - interior
CADW
 
 Hardwick Hall, more glass than wall 1597
 
 Watt condenses steam 1764
 
 First Boulton and Watt engines 1776
 
 Iron bridge at Coalbrookdale 1779
 
 Cort puddles iron 1784
 
Steam-powered blast furnaces are constructed at Blaenavon 1788 Blaenavon Ironworks
CADW
 
 New royal castle at Balmoral 1856
 
 Burges provides Gothic interiors in Cardiff Castle 1867
 
 Gothic station hotel by Scott at St Pancras 1868
 
 Waterhouse wins competition for Manchester Town Hall 1868
 
 William Burges begins Castell Coch 1875 Castell Coch
CADW