The North star is the brightest star in the sky.
Another common misconception.
What you call “bananas” are actually “bananos” (same root as the SI prefix for E-9), which are much much smaller than the (less common) full-sized variety.
I don’t know of anyone that thought it was.
The Kremlin is a building with colourful towers and candy-striped onion-domes.
Nope. That’s St Basil’s Cathedral (actually the Cathedral of the Intercession of the Most Holy Theotokos on the Moat). The Kremlin is the big red fort next door.