We tried to go shopping at Harrods on Sunday May 4, but it was closed. So we walked around the nice neighborhoods, tripping on the uneven sidewalks, but nobody noticed.
Mayfair featured this brick building and many others of stone. They must have been really expensive when they were built in the 1700's and 1800's. I was reading "The DaVinci Code" on the flight over and it described the secret society of masons. They kept the techniques for making stone buildings closely-held and they were part of the power elite along with the architects for wealthy land-owning families.

We finally found the Institute of Contemporary Art that afternoon and in the evening we went to a wonderful concert at Festival Hall near Waterloo Station and the London Eye. Peg had arranged for two tickets for six pounds each over the Internet. The seats were high up and right in the center. It was wonderful to watch the professional musicians play Beethoven's Seventh Symphony on instruments that probably dated back to the days when the music was written.