|Covid-19|April 17 - Grand Théâtre de Bordeaux in France, designed by Victor Louis is inaugurated.
June 24 - Chesme Church in Saint Petersburg, designed by Yury Felten, is consecrated.
Assumption Cathedral, Kharkiv, Ukraine, is consecrated.
Fragrant Hills Pagoda in China is completed.
Kashi Vishwanath Temple on the Ganges in Varanasi, Uttar Pradesh, is built.
Xumi Fushou Temple in Chengde Mountain Resort, China, is built.
Royal Villa of Monza in Lombardy, designed by Giuseppe Piermarini, is completed.
Reconstruction of Palazzo Tucci in Lucca, Tuscany by Ottaviano Diodati is commissioned.
October 1 - Robert Smirke, English architect (died 1867)
April 23 - Sanderson Miller, English Gothic Revival architect and landscape designer (born 1716)
August 29 - Jacques-Germain Soufflot, French architect (born 1713)
1780 in architecture Wikipedia
The year 1780 in architecture involved some significant events.