Russian Painter - Mikhail Vasilievich Nesterov

Nesterov was one of Empress Alexandra's favorite painters, his picture of the Annuciation hung in the Mauve Room.  He worked for Grand Duchess Elizabeth in her Martha and Mary convent in Moscow.  Here's a bio.

Hagia Sophia - the Church of Holy Wisdom

Learn about the history and discover the mosaics of this monument of world architecture