I'm seeing this one pinned as "Rainbow Church" -- not rainbow, and not a church! This building is "Radcliffe Camera" part of the Oxford University libraries and this particular entry won the place in the "Color Blind contest on
San Francisco’s Mosaic Staircase. Hidden art gem in San Francisco; head to and Moraga to discover The Avenue Tiled Steps. Not only will you be able to see some amazing views of the city, you'll get to appreciate a beautiful mosaic running up 163 steps.