Lake Veisiejai and Observation Tower. The Observation Tower of Veisiejai Regional Park was built in Kailiniai Village, in the north western part of Lake Snaigynas. The 15-meter-high tower offers vistas of the three lake islands on one side and the panorama of Veisiejai on the other side. The tower is structured to reflect a glass or whirlwind. The observation deck is built on a circle of slightly inclined columns and can be reached by climbing the curved staircase.