Researchers locate unknown tower of Vilnius castle 50 Researchers locate unknown tower of Vilnius castle / D. Umbrasas/LRT A previously unknown tower of Vilnius' Lower Castle has been located at the foot of the capital's Gediminas Hill. "We knew that it was somewhere; the goal was to locate it," Stanislovas Patkauskas, scientific research coordinator at the State Cultural Reserve of Vilnius Castles, told reporters on Tuesday. The underground remains of the tower were found using electrical tomography in Pilių Square, between the monument to the Grand Duke Gediminas and the former Rotonda cafe. Patkauskas said that no archaeological excavations are planned on the site "during this season due to a lack of funds".