The Kaunas Fortress building, located in a very picturesque place near the Kaunas Lagoon (which appeared there later) is one of the most complex ones, as it was designed considering the mountainous terrain. That is why this fort became the most expensive Kaunas Fortress object at that time. It was barely touched during World War I, except a few structures destroyed by retreating soldiers. During World War II, a large explosion took place in the fort, the exact circumstances of which are unknown. Currently the fortifications are being tidied up; a large part of the territory is occupied by the active sports club Legionas.