Wikimedia Commons has media related to 1811. 1811 (MDCCCXI) was a common year starting on Tuesday of the Gregorian calendar and a common year starting...

The Great Comet of 1811, formally designated C/1811 F1, is a comet that was visible to the naked eye for around 260 days, the longest recorded period of...

The 1811–1812 New Madrid earthquakes were a series of intense intraplate earthquakes beginning with an initial earthquake of moment magnitude 7.2–8.2 on...

The Commissioners' Plan of 1811 was the original design for the streets of Manhattan above Houston Street and below 155th Street, which put in place the...

Paraguay de facto started on 14 May 1811 after the Revolution of May 14 when a local ruling junta was created. In early 1811 Paraguayan forces had repeatedly...

legislatures. Senators were elected over a wide range of time throughout 1810 and 1811, and a seat may have been filled months late or remained vacant due to legislative...

was a frigate in the Royal Danish-Norwegian Navy. She was commissioned in 1811 and originally carried 36 guns, later being upgraded to 42. She served briefly...

New Madrid, Missouri. The New Madrid fault system was responsible for the 1811–12 New Madrid earthquakes and has the potential to produce large earthquakes...

Zephyrinus Friedrich Meinrad Fürst von Hohenzollern-Sigmaringen; 7 September 1811 – 2 June 1885) was the last prince of Hohenzollern-Sigmaringen before the...

regent for his father, King George III, having done so since 5 February 1811 during his father's final mental illness. George IV was the eldest child...