SP have really rich history, so if you are eager to explore you'll enjoy
The Hermitage is probably the most famous (and the first) thing that you can visit in Sankt Petersburg, so let's start with it.
It's huge. Really huge. It could take a day, or even two if you decide to go in more detailed exploration than just walking through it's all rooms.
In many rooms you can meet young students doing exercises for their art classes
Ofc, you should visit Church of the Savior on Blood, and you should definitely check on it's history!
Don't miss Saint Isaac's Cathedral
And view from it's top
SP is located on Neva river, but it's also intersected with many canals like this one
Cathedral at Peter and Paul fortress
Because of nice weather, many people decided to spend time outside enjoying nice view
And these two, celebrated their love by sending heart shaped balloons into the sky <3
And in the evening, it's dinner time! Beside it's good look, Russian food is also quite tasty!
Restaurant Izba (house) left best impression at us, and we would definitely recommend it.
But Sankt Petersburg is much more that you could find on this page. So if you are still looking for a city you will fall in love with, you should consider adding Sankt Petersburg to your travel list ;)