The Moscow Kremlin egg or Uspenski Cathedral egg (1906) is a jewelled Easter egg, made under the supervision of the Russian jeweller Peter Carl Faberge in 1906 for Tsar NicholasII of Russia, as an Easter gift to his wife, the Czarina Alexandra Fyodorovna.
It is the largest Imperial Egg in commemoration of the Royal couple's visit to Moscow for Easter, in 1903. The egg itself resembles the main building of the Dormition Cathedral of the Moscow Kremlin, and is crowned with a golden dome, enameled Spasskaya Tower, as well as icons and interior items of the cathedral abd musical mechanisms.
The Moscow Kremlin egg currently held in the Kremlin Armoury Museum in Moscow, and it is one of the few imperial Faberge eggs that were never sold after the Russian Revolution.