The Royal Mews near Buckingham Palace. This is where they keep the royal carriages, the horses and some of the beautiful cars (Bentleys, RR, etc). Also, head over to Hyde Park (I think thats it someone correct me if I’m wrong) and maybe catch some of the rehearsals for the Trooping of the Color. We were there one year the end of May and got to watch a full dress rehearsal. It was amazing! They have a rehearsal at Buckingham Palace, too on a Saturday, I think. London is wonderful - enjoy!!
Ohhh, I didn’t do the Royal Mews - I heard about it from a ticket rep for the airline we used. It was based on her tip that I found out that Buckingham Palace was open for tours while we would be in England - so we went! Got super lucky as there were only two days left to tour, and it was a little “slow” that day. It was an AWESOME opportunity. I wanted to do the Mews also, but we ran short of time. :(
Really - how many people in the whole world can say they toured Buckingham Palace? *giggle*