"Oh dreary rock, do you remember the Pannonian Sea?" Castramentation - the art of building fortified constructions. Stone cannot burn, but it does remember. The Petrovaradin Fortress, which is more than three centuries old, was being built for almost a hundred years. During those years, it is said that the most valuable currency in the area were eggs. Instead of a dish, they ended up in the mortar... ...Planet Fortress. Quietly but persistently reminds us that there is no future without a past. Vice versa. The fortress means security. Security is peace. Peace is salvation. Salvation is love. Whisper the 'Officers' Beach', recites the lower town, whistle the underground passages, echo the wells, tell the walls, plays "the drunken clock", sings the Fortress.