I had an over the top tour! I was the only one who showed up, so my private guide and I planned a custom tour. He was the perfect guide; he knew a great deal about the sights and was really interesting, well read and also made some suggestions for things to do during my time in D.C. I took him up on his suggestion to take in a free concert at the Kennedy Center. I could not have been happier with my tour. I was, however, not happy with my experience with Viator and should have booked my tour directly!!!