Editing Castle Douglas (section)

===20th century===
The Clock Tower was built 1934–35 and stands at the corner of King St and St Andrews St. It is a Category C listed building. It was designed by the architect William Forrest Valentine (1885–1957).<ref>{{Cite web |title=Historic Environment Scotland |url=https://portal.historicenvironment.scot/designation/LB50164}}</ref> The first tower, built by Sir William Douglas, was destroyed by fire in 1892, as was a second clock tower forty years later. A plaque records that in 1935 Henry J. Hewat of Paterson, New Jersey, USA, donated the present clock tower to the town. Capt Hewat was a native of Castle Douglas who had emigrated to the US in 1893.

[[Freeman Wills Crofts]] set a key scene in his 1930 novel "''Sir John Magill's Last Journey"''  at Castle Douglas railway station.

The former parish church (St Andrew's) was remodelled by [[Robert Lorimer]] in 1900. It was converted into a theatre, now known as [[The Fullarton]].<ref name="DSA">{{Scottish Architects name|id=200052|name=(Sir) Robert Stodart Lorimer}}</ref>

The Castle Douglas War Memorial was designed by Captain [[Frank Mears]] and was unveiled in 1921.<ref>{{cite web| url = http://warmemscot.s4.bizhat.com/warmemscot-ptopic9354.html| title = The Scottish Military Research Group - Commemorations Project :: View topic - Charles d'Orville Pilkington Jackson}}</ref>

Castle Douglas was a reception area for [[Glasgow]]'s evacuated children during World War II.

From March 1943 to April 1944, the town was the base for [[92nd (Loyals) Light Anti-Aircraft Regiment, Royal Artillery]], which was training for [[Operation Overlord]], the invasion of occupied Europe. Their headquarters were at ''Craigroyston'', a large Victorian house near the railway station. Nissen huts were set up at Carlingwark Loch to house the troops, while other billets included a church and a bowling clubhouse.<ref>{{Cite web|title=The Scottish Military Research Group - Commemorations Project :: View topic - Charles d'Orville Pilkington Jackson|url=http://warmemscot.s4.bizhat.com/warmemscot-ptopic9354.html|access-date=2021-07-30|website=warmemscot.s4.bizhat.com}}</ref>