1805 in architecture

The year 1805 in architecture involved some significant events.

Buildings

 * November 26 – The Ellesmere Canal's Pontcysyllte Aqueduct, designed by Thomas Telford and William Jessop, is opened on the border of Wales, the tallest and longest in Britain.
 * Theatre Royal, Bath, England is opened.
 * Evangelical Lutheran Church of Saint Mary in Saint Petersburg is built.
 * Haga Palace in Stockholm, Sweden, designed by Carl Christoffer Gjörwell, is completed.

Awards

 * Grand Prix de Rome, architecture: Auguste Guenepin

Births

 * March 11 – Thomas Ellis Owen, English architect working chiefly around Southsea (d. 1862)
 * June 9 – Victor Baltard, French architect (d. 1874)
 * July 26 – John Miller, Scottish railway civil engineer (d. 1883)
 * Peter Ellis, English architect working in Liverpool (d. 1884)
 * James Salmon, Scottish architect (d. 1888)

Deaths

 * Peter Atkinson, English architect (b. 1725)