Here you  see the center of Old Vilnius by

Juozapas KAMARAUSKAS
1874 –1946
A fragment of Vilnius Plan in Pictures 1923 – 1928.
Watercolour. VAM, inv. arch. 2353
From: Vladas Drėma
DINGĘS VILNIUS
(Lost Vilnius).
Vaga, 1991

In the centre of the plan you can find the marked place where, according to V. Drėma,
was established a grammar school headed by A. Kulvietis

Another picture is of the first school in which Martynas Mažvydas is considered to have taught

You can see also the Panorama of Old Vilnius (357 KB file)