|Covid-19|First excavations of the Gallo-Roman site at Grand, Vosges.
Narrative of the Operations and Recent Discoveries Within the Pyramids, Temples, Tombs, and Excavations in Egypt and Nubia by Giovanni Battista Belzoni.
First volume of the American Antiquarian Society's Transactions. Includes map and descriptions of Mound Builders remains in Ohio by Caleb Atwater.
April 8 - Venus de Milo (Aphrodite of Milos, c.150 BC-125 BC) is discovered on the island of Milos by a peasant named Yorgos Kentrotas.
Statue of Ramesses II is discovered at the Great Temple of Ptah of Mit-Rahina near Memphis, Egypt by Giovanni Battista Caviglia.
Canon William Greenwell, 23rd March 1820 (died 1918). English archaeologist notable for his Grimes Graves excavations.
1820 in archaeology Wikipedia
The year 1820 in archaeology involved some significant events.