If a picture is worth a thousand words, than my photos from Catherine's Palace in Tsarskoye Selo should fill a novel. This was the summer residence built by Peter the Great for his wife Catherine I, but embellished by their daughter, Empress Elizabeth.
Here is just a sampling.
Bonus: C is for Celebrimbor, the Elf Lord of Eregion. He forged the Three Rings of Power and after Sauron forged the One Ring to control the Three Rings, he hid the Three Rings and prepared for war.