If you are in DC then you won't be too far from Baltimore where you can go to the Inner Harbor area and see the National Aquarium, very cool and very worth the trip. And if you happen to be an Aquarium nut, one of the Largest is in Chattanooga, TN right at the Base of Lookout Mountain where on a clear day you can see 7 states (and probably Dollywood too.)
If you make it to chattanooga, you might want to come north a bit to Bowling Green, KY where you can visit the National Corvette Museum and tour the facility where every Corvette is built and possibly get a glance at the new Cadillac XLR based off the Corvette.
Now if you've made it to the Corvette Museum you are only 15 miles from the worlds Largest Cave System Mammoth Cave National Park
Of course I'm sure there's plenty interesting things I have forgotten about. Those are some pretty good things to do while you are in the eastern half of the US.
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Sounds more like they are ready for Binary, FL. Source code retirement community just outside Boca Raton.
If you are in DC then you won't be too far from Baltimore where you can go to the Inner Harbor area and see the National Aquarium, very cool and very worth the trip. And if you happen to be an Aquarium nut, one of the Largest is in Chattanooga, TN right at the Base of Lookout Mountain where on a clear day you can see 7 states (and probably Dollywood too.)
If you make it to chattanooga, you might want to come north a bit to Bowling Green, KY where you can visit the National Corvette Museum and tour the facility where every Corvette is built and possibly get a glance at the new Cadillac XLR based off the Corvette.
Now if you've made it to the Corvette Museum you are only 15 miles from the worlds Largest Cave System Mammoth Cave National Park
South of here is is the US Space and Rocket Center in Huntsville, Alabama and of course others have mentioned The Kennedy Space Center at Cape Canaveral.
Of course I'm sure there's plenty interesting things I have forgotten about. Those are some pretty good things to do while you are in the eastern half of the US.