Švėksna,
a tiny and a very special little town/village even within Lithuania, < 2000 residents now [here I grew up]
[Special also because--besides of unique in Lithuanian architecture--at its peak in 1897, 974 Jews lived in Švėksna, making up about 53% of the "town's" total population.]
Institute of Mathematics and Informatics
in Vilnius, Lithuania
[Here I worked 1980-1992 as principal researcher]
[Since 2018, "Institute of Data Science and Digital Technologies"]