Ryan made the great suggestion of taking Dad to the Udvar Hazy Air and Space Museum. It's part of the Smithsonian but is in Virginia, near Dulles Airport. It's HUGE! It's a big hangar filled with awesome planes, space crafts, gliders, hot air balloons... It was the perfect thing to do with my Dad because he is retired Air Force and loves history.
Teach me all about planes Grandpa!
We also made sure to do the driving tour of DC and spent some time in my awesome neighborhood. Unfortunately, Dad could only stay for a couple of days. We were the first stop on his Grandkid tour (they all live on this side of the country). We had a great time though and can't wait for him to be back! Logan misses his Grandpa!