|Covid-19|Ludington Building - Chicago, designed by William Le Baron Jenney, earliest surviving steel-framed building in the city, and the earliest entirely terracotta-clad skyscraper (8 storeys).
Manhattan Building - Chicago, designed by William Le Baron Jenney, completed; world's earliest surviving steel-framed building to use a purely skeletal supporting structure.
Second Leiter Building - Chicago, designed by William Le Baron Jenney.
Monadnock Building - Chicago, tallest masonry load-bearing wall building when built.
Sacred Heart Cathedral - Davenport, Iowa, designed by James J. Egan.
St. Ambrose Cathedral - Des Moines, Iowa, designed by James J. Egan.
San Sebastian Church (Manila).
Wainwright Building - St. Louis, Missouri, designed by Dankmar Adler and Louis Sullivan.
University of Pennsylvania Library - Philadelphia, Pennsylvania, designed by Frank Furness.
Several buildings constructed for the General Land Centennial Exhibition world fair - Prague, including the Art Nouveau Průmyslový Palace.
Victoria Hall (Geneva), Switzerland, a concert hall designed by Marc Camoletti.
Stadttheater Zürich, designed by Fellner & Helmer, opened.
House of the Estates in Helsinki, Finland, built.
General Post Office, Birmingham, England, designed by Henry Tanner.
Palace Theatre, Manchester, England, designed by Alfred Darbyshire.
Royal Gold Medal - Arthur Blomfield.
Grand Prix de Rome, architecture: Henri Eustache.
January 2 - Giovanni Michelucci, Italian architect, urban planner and engraver (died 1990)
August 2 - Joseph Charles Fowell, Australian architect (died 1970)
January 11 - Baron Haussmann, French civic planner notable for the rebuilding of Paris in the 1860s (born 1809)
January 15 - John Wellborn Root, Chicago architect (born 1850; pneumonia)
January 22 - Miklós Ybl, Hungarian architect (born 1814)
March 19 - Jānis Frīdrihs Baumanis, Latvian architect (born 1834)
April 7 - J. D. Sedding, English ecclesiastical architect (born 1838)
May 7 - John Hayward, English Gothic Revival architect (born 1807)
1891 in architecture Wikipedia
The year 1891 in architecture involved some significant architectural events and new buildings.