Toompea's dominating landmark is the Russian Orthodox cathedral named for the duke who attacked southeastern Estonia and Pskov in the early 13th century. Tsar Alexander III ordered the cathedral designed in 1894 by St. Petersburg master Mikhail Preobrazhensky and it was completed in 1900. According to legend, the cathedral was built on the grave of Estonian hero Kalev and has suffered structurally as a result.

Admission free.