Saint Isaac´s cathedral
Out of my hotel room (Hotel Astoria).
Saint Isaac's Cathedral in Saint Petersburg, Russia is the largest cathedral in the city and was the largest church in Russia when it was built (101.5 meters high). It was dedicated to Saint Isaac of Dalmatia, a patron saint of Peter the Great who had been born on the feast day of that saint. The catherdral has a capacity of 14.000 people.