Four decades ago, his castles were almost "fascist" in their Art Deco aesthetic, characterized by rigorous symmetry and exacting complexity. Today, his work has softened and taken on a playful dimension, while retaining elements of Brutalism, notably through the use of sand color and clean contours. However, it's essential to remember that these castles are not scale models of real buildings. Their ephemeral nature also places them in artistic currents such as Conceptualism, Arte Povera or Earth Art.
Calvin Seibert has even collaborated with Hermès on a photo shoot in Cap Ferret. Such projects have taught him the difficulty of meeting all expectations, given the many unpredictable elements involved, not least the vagaries of the weather. Nevertheless, he continues to receive offers to exhibit his talent, whether in Italy or Saudi Arabia.