Alexander Nevsky Cathedral is the largest and grandest Orthodox cupola cathedral in Tallinn, built between 1894 and 1900 in Russian Revival style during the Russian Empire period. It features five onion domes, stunning mosaics above the entrance, and an ensemble of 11 bells that is the largest in Tallinn. The imposing building sits atop Toompea hill directly opposite the parliament. The interior is decorated with icons and golden mosaics. Entry is free but photography may be restricted during services. It is one of the most photographed and visited landmarks in Tallinn