1821 in architecture

	… 1811; 1812; 1813; 1814; 1815; 1816; 1817; ; 1818; 1819; 1820; 1821; 1822; 1823; 1824; ; 1825; 1826; 1827; 1828; 1829; 1830; 1831 …;
	Buildings and structures Art; Archaeology; Architecture; Literature; Music; Philosophy; Science; +...

The year 1821 in architecture involved some significant events.