Ireland, County Longford, Longford town, St Mels Cathedral.

Ireland, County Longford, Longford town, St Mels Cathedral.

Estonia, Tallinn, Orthodox Cathedral of Alexander Nevsky, Toompea.

Estonia, Tallinn, Orthodox Cathedral of Alexander Nevsky, Toompea.

Estonia, Tallinn, Orthodox Cathedral of Alexander Nevsky, Toompea.

Russia, Saint Petersburg, Decorative interior, Catherine Palace, Tsarskoye Selo, Pushkin.

Estonia, Tallinn, Cathedral of Saint Mary the Virgin, also known as Dome Church, Toompea Hill.

Russia, St Petersburg, Christ mosaic in dome, Church on Spilled Blood, also Church of the Saviour on Spilled Blood.

Russia, St Petersburg, Tsar Alexander III portrait, Catherine Palace, Tsarskoye Selo, Pushkin.

Russia, St Petersburg, Church on Spilled Blood, also Church of the Saviour on Spilled Blood.

Russia, St Petersburg, Iconostasis door, Church on Spilled Blood, also Church of the Saviour on Spilled Blood.

Russia, St Petersburg, The Winter Palace, Hermitage Museum, from Palace Square.