Explore 482 historical events from 1820–1829.
Giuseppe Piazzi was an Italian Catholic priest of the Theatine order, mathematician, and astronomer. He established an observatory at Palermo, now the Osservatorio Astronomico di P…
Giuseppe Piazzi, Italian mathematician and astronomer (born 1746)
Kondraty Fyodorovich Ryleyev was a Russian poet, publisher, and a leader of the Decembrist revolt, which attempted to overthrow the Russian monarchy in 1825.
Kondraty Ryleyev, Russian poet and publisher (born 1795)
Sir Thomas Stamford Bingley Raffles was a British colonial official who served as the governor of the Dutch East Indies between 1811 and 1816 and lieutenant-governor of Bencoolen b…
Stamford Raffles, English politician, founded Singapore (born 1782)
René-Théophile-Hyacinthe Laennec was a French medical doctor and musician. His skill at carving his own wooden flutes led him to invent the stethoscope in 1816, while working at th…
René Laennec, French physician, invented the stethoscope (born 1781)
Philippe Pinel was a French physician, precursor of psychiatry and incidentally a zoologist. He was instrumental in the development of a more humane psychological approach to the c…
Philippe Pinel, French physician and psychiatrist (born 1745)
Parramatta is a city and major commercial centre in Greater Western Sydney. It is located approximately 24 kilometres (15 mi) west of the Sydney central business district on the ba…
In Parramatta, Australia, Scottish astronomer James Dunlop discovered Centaurus A (pictured), which was later recognised
HMS Beagle was a Cherokee-class 10-gun brig-sloop of the Royal Navy, one of more than 100 ships of this class. The vessel, constructed at a cost of £7,803, was launched on 11 May 1…
HMS Beagle (pictured) departed on her first voyage from Plymouth for a hydrographic survey of the Patagonia and Tierra d
York was a town and the second capital of the colony of Upper Canada. It is the predecessor to the old city of Toronto (1834–1998). It was established in 1793 by Lieutenant-Governo…
In York, Upper Canada, members of the Family Compact destroyed William Lyon Mackenzie's printing press in the Types Riot
The Greek War of Independence, also known as the Greek Revolution or the Greek Revolution of 1821, was a successful war of independence fought by Greek revolutionaries against the …
Greek War of Independence: A combined Egyptian and Ottoman army began an invasion of the Mani Peninsula, but were initia
Quincy Market is a historic marketplace complex next to Faneuil Hall in Downtown Boston, Massachusetts, United States. It consists of three buildings constructed in 1826 and design…
Quincy Market in Boston opens as a replacement for an overcrowded market in Faneuil Hall, later becoming a major…
Quincy Market is a historic marketplace complex in Downtown Boston, Massachusetts, United States. Located at Merchants Row next to Faneuil Hall, it consists of three buildings cons…
Quincy Market (pictured) in Boston, Massachusetts, opened as a replacement for an overcrowded market in Faneuil Hall.
The coronation of Charles X took place on 29 May 1825 in Reims, where he was crowned King of France and Navarre. The ceremony was held at the Cathedral of Notre-Dame de Reims in Re…
The Coronation of Charles X of France takes place in Reims Cathedral, the last ever coronation of a French monarch
Marie-Joseph Paul Yves Roch Gilbert du Motier, Marquis de La Fayette, known in the United States as Lafayette, was a French military officer and politician who volunteered to join …
General Lafayette, a French officer in the American Revolutionary War, speaks at what would become Lafayette Square in B
A cornerstone is the first stone set in the construction of a masonry foundation. All other stones will be set in reference to this stone, thus determining the position of the enti…
The first cornerstone is laid for Fort Hamilton in New York City
Bolivia's independence was definitively proclaimed on 6 August 1825 at a congress held in Chuquisaca.
The Bolivian Declaration of Independence is proclaimed.
The Treinta y Tres Orientales was a revolutionary group led by Juan Antonio Lavalleja and Manuel Oribe against the Empire of Brazil. Their actions culminated in the foundation of m…
The Thirty-Three Orientals declare the independence of Uruguay from Brazil.
The Kingdom of Portugal was a monarchy in the western Iberian Peninsula and the predecessor of the modern Portuguese Republic. Existing to various extents between the mid-12th cent…
Portuguese and Brazilian diplomats sign the Treaty of Rio de Janeiro, which has Portugal recognise Brazilian…
Restauration was a sloop built in 1801, in Hardanger, Norway. It became a symbol of Norwegian American immigration. Historical sources may contain several variations on the name of…
Restauration arrives in New York Harbor from Norway, the first organized immigration from Norway to the United States.
Johann Jakob Balmer was a Swiss mathematician best known for his work in physics, the Balmer series of hydrogen atom.
Johann Jakob Balmer, Swiss mathematician and physicist (died 1898)
George Inness was an American landscape painter.
George Inness, American painter and educator (died 1894)
Thomas Henry Huxley was an English biologist and anthropologist who specialised in comparative anatomy. He has become known as "Darwin's Bulldog" for his advocacy of Charles Darwin…
Thomas Henry Huxley, English biologist, anatomist, and academic (died 1895)
The Stockton and Darlington Railway (S&DR) was a railway company that operated in north-east England from 1825 to 1863. The world's first public railway to use steam locomotives, …
The world's first public railway to use steam locomotives, the Stockton and Darlington Railway, is ceremonially opened…
The Erie Canal is a historic canal in upstate New York that runs east–west between the Hudson River and Lake Erie. Completed in 1825, the canal was the first navigable waterway con…
The Erie Canal opens, allowing direct passage from the Hudson River to Lake Erie.
Augustus Henry Julian Le Plongeon was a British-American antiquarian and photographer who studied the pre-Columbian ruins of America, particularly those of the Maya civilization on…
Augustus Le Plongeon, English-American historian, photographer, and academic (died 1908)