The Piccolomini (Music) Library in the Duomo, Siena, Italy. The floor and ceiling are also works of art. The floor of the Duomo is fantastically amazing; Google 'The Pavement of the Cathedral of Siena'.
https://flic.kr/p/52jZDU | Ripon Cathedral | Canon EOS 10d : 28mm 1/10 & 1.5" @ f8 The east window inside Ripon Cathedral - 2 shots taken at different exposures and then HDR treated My best ever photo yet??? I am certainly extremely pleased with it :-)