The Schloß Charlottenberg in downtown Berlin is named after the Sophie Charlotte shown in this portrait. The blog beyondthepale has an article about Sophie Charlotte of Prussia, nee Hanover, that includes this: "...Sophia Charlotte of Hanover – later, Queen of Prussia – had the palace built – then known as Litzenburg – as a little place to hold her court and, mainly to surround herself with philosophers, scientists, artists and musicians. She was renowned for being incredibly intelligent and a huge supporter of the Arts, as well as an internationally acclaimed beauty.
A contemporary, on meeting her, described her thus: “She has big, gentle eyes, thick black hair, eyebrows as if drawn by a compass, a well-proportioned nose, incarnadine lips, very good teeth and a lively complexion.”
She may not be what modern standards describe good looking, today, but this goes to show our changing view of what constitutes female beauty. Back then she had such power and immense knowledge that, combined with her looks, Peter the Great on meeting her was literally dumbstruck. He couldn’t get a single word out, so intimidated was he; but Sophia was a naturally charming and humorous woman, so quickly put him at his ease. He was so grateful that he gifted her many trunks full of brocade and furs..."