National Library of Poland Tourist attraction in Warszawa, Poland

Reference:Janusz Drzewucki / CC BY-SA 4.0
Reference:Janusz Drzewucki / CC BY-SA 4.0
Map gps coordinates: 52.214444, 21.004444
Address: Leszowa 2, 02-084 Warszawa, Poland

Gottfried Wilhelm Leibniz's correspondence, papers and notes from 1669 to 1704 stored in National Library of Poland.

Source: Wikipedia