Radu cel Frumos, Radu the Handsome, Radu the Fair --- but there are no images of him left!
What an irony.
On the outer wall, to the left, there was some faiding painting, red in colour, which, although washed out by the sun, had been able to widthstand 400 years since its creation. But who was interested then in deciphering that painting! I also think that, on the inner side of this wall, there must have been the face of the founder....