Painting important historic sites was inseparable from Romantic attitudes. In his many views of Czech and Moravian castles, stately homes and silhouttes of towns Ullik followed in the footsteps of Antonín Mánes and preceded Jullius Mařák. His pictures of castles and ruins are, moreover, valuable documents, preserving the way they looked in his time. Zvířetice, originally a 13th-century Gothic castle, was rebuilt in the 16th century as a Renaissance manor and then destroyed by fire in 1720. Ullik’s view of its cylindrical tower and two manor houses is remarkable because of the unified colour scheme and free brushwork.