An imposing religious landmark in the capital city's Senate Square, this Lutheran cathedral is one of Helsinki's most important monuments. The majestic outline of its 71-meter (232.93-feet) central tower illustrates the true glory of the White City of the North. The cathedral was designed by C. L. Engel in 1830; when Engel died in 1840, E. B. Lohrmann took over the supervision and added several touches to the original blueprints, including details in the simple yet beautiful interior. The cathedral was finally completed in 1852, though the famous grand steps would not be added for another 20 years. Despite the western, classical style, the influences of Russia and especially that of Czar Nicholas I are also visible. The Czar also donated the altarpiece, which was the work of Russian artist Von Neff. The cathedral has a high-ceilinged crypt, a venue for exhibitions and concerts, and a café open every summer.