Yusupov Palace on Moika
Moyka River Embankment, Russia · built 1770
The Palace of the Yusupovs on the Moika, known as the Moika Palace or Yusupov Palace, is a former residence of the Russian noble House of Yusupov in St. Petersburg, Russia, now a museum. The building was the site of Grigori Rasputin's murder in the early morning of December 17, 1916. Sometimes called the Moika Palace to tell it apart from other palaces of the same family in Saint Petersburg, though it is not the only palace on this river in the city.
Palace data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).