1781 in architecture

The year 1781 in architecture involved some significant architectural events and new buildings.

Buildings and structures

Brizlee Tower, Alnwick, Northumberland, England, a folly erected for Hugh Percy, 1st Duke of Northumberland, possibly designed by Robert Adam{{cite web|title=Brizlee Tower|url=http://www.robinkent.com/288.html|work=Robin Kent Architecture & Conservation website|publisher=Robin Kent Architecture & Conservation|access-date=22 August 2011|archive-url=https://web.archive.org/web/20120325050912/http://www.robinkent.com/288.html|archive-date=25 March 2012|url-status=dead}}
St. Hilarius Parish Church of Näfels, Switzerland, designed by architects Johann Singer and Jakob Singer.{{cite book|first=Jacques|last=Stäger|title=Pfarrkirche St. Hilarius Näfels: Festschrift zur Einweihung der renovierten Pfarrkirche St. Hilarius Näfel|publisher=Kath. Kirchgemeinde|oclc=83710004|year=1979}}
Triumphal Arc, Kamianets-Podilskyi, Ukraine, built for the visit of Polish King Stanisław August Poniatowski to the city of Kamianets-Podilskyi.{{cite book|title=By the streets of Kamianets-Podilskyi|last=Budzey|first=Oleh|year=2005|publisher=Svit|location=Lviv|isbn=966-603-274-0|page=72}}
Sturehov Manor near Stockholm, designed by Carl Fredrik Adelcrantz, probably completed.
Montagu House, Portman Square, London, designed by James Stuart, completed.

March 13 – Karl Friedrich Schinkel, Prussian architect, city planner, and painter (died 1841)[http://www.encyclopedia.com/doc/1O2-SchinkelKarlFriedrich.html Karl Friedrich Schinkel – Facts, information, pictures] – Encyclopedia.com
August 12 – Robert Mills, possibly the first native-born American to train as a professional architect (died 1855){{cite book |title=Robert Mills: America's First Architect |first1=John |last1=Bryan |publisher=Princeton Architectural Press |date=26 November 2001 |place=New York |isbn=1-56898-296-8 |page=330}} {{ISBN|978-1-56898-296-0}}.