Travel Gaylord National Resort Summerfest is Great American Fun Jenn, July 7, 2018 Gaylord National Resort sits just outside of the hustle and bustle of Washington D.C. on the Potomac Waterfront. To celebrate its 10 year anniversary, Gaylord National is offering Summerfest. This seasonal event offers themed activities for guests, and allows for a fun getaway weekend. Last weekend my daughter and our friends…