Unfortunately art and art history isn’t my forte, but I still thoroughly enjoyed wandering the endless halls of the Hermitage. Many guided tours only allow 2 or 3 hours, but I’d suggest dedicating a day or even more as there’s so much to see. Hopefully a few of these will inspire you to visit:

Approaching the Hermitage

Across Palace Square

Palace Square

Intricately carved flooring

Golden Phoenix
I’m glad you like the Hermitage. There’s the extension – The General Staff Building (Zdanie Glavnovo Shtaba) with great impressionists exposition