The Castle theme is one of LEGO’s primary themes first introduced in 1978 and based around medieval life with castles and knights. It is currently the third longest-lived theme in LEGO history. Over the years it saw numerous changes thus introducing various fantasy elements.
1984 LEGO Sets
1984 cemented Castle’s identity with the debut of two enduring factions—the lion-badged Crusaders and the Black Falcons—bringing rival heraldry, fortified keeps, and standardized knight equipment. Space and Town sustained broad annual waves, and Trains added accessories that improved 12V layouts and operations.