 In addition to his work in Helsinki, Engel was also appointed "state intendant" with responsibility for the design and supervision of construction of the vast majority of state buildings throughout the country, including tens of church designs, as well as the design and laying out of town plans.Among these works were Helsinki Naval Barracks (1816–38), Helsinki Old Church (1826), Lapua Church (1827), Kärsämäki Church (1828), Pori Town Hall (1831), Hamina Church (1843), Wiurila manor house (1845).Engel had in his possession a copy of Andrea Palladio's architectural treatise "I quattro libri dell'architettura", and Engel scholars have often stressed Engels' indebtedness to Palladian theory.