Saint Isaac's Cathedral, built to be the main cathedral of Russia and dedicated to Saint Isaac of Dalmatia, the patron saint of the city's founder, Peter the Great, is the largest Orthodox church in Saint Petersburg. The cathedral greets you every time you return to the hotel from a city stroll. And if you're lucky enough to stay in a room with a view, you can enjoy a panoramic view of Saint Petersburg's main symbol without even leaving the hotel.
The colonnade of Saint Isaac's Cathedral is especially noteworthy. It's the most famous observation deck in Saint Petersburg. From a height of 43 meters, it offers views of the city's central districts and the Neva River.