We had searched online for highly rated tour companies in DC to book with prior to our 4 day visit to the area with our two boys , 8 and 10 years old . The Tiber Creek name came up consistently so we decided to book with them . Prior to the tour , the owner Chris , called and emailed with questions about our interests and our " must see list " so that he could match us with the best guide and tailor our tour to our specific interests . We took a night tour and an afternoon tour both of which were excellent . Clift,our guide was very knowledgable , in particular about Arlington where we watched the changing of the guard , spellbound . He engaged the boys at their level of knowledge , and shared interesting trivia as well as the basic information . My husband and I both felt like not a minute was wasted but we didn't feel rushed either .The day after our tour , we were contacted by Chris , who ,to our surprise offered us passes to the House Chamber as he remembered us telling him that we were going there that day. It is difficult to find that level of customer service these days . We have done a dozen private tours in both the US and overseas and this ranks right up there with the best .