
Architecture is a subtheme of Classic introduced in 1963 and currently consists of 3 sets. All sets were released in 1963. As of today, the average annual growth of sets in Classic Architecture is approximately 6.2% per year.
The LEGO Classic Architecture theme from 1960s, often just referred to as LEGO Architecture from that era, consisted of sets that allowed builders to create realistic models of buildings and structures. Different from the modern-day LEGO Architecture series that recreates famous landmarks, the 1963 theme provided generic bricks and instructions for constructing various architectural styles and building types. It was aimed at encouraging a more sophisticated building approach and understanding of architectural design among LEGO enthusiasts.