I've been to the DC area, many years ago, and wish I'd been as keen on the old history then as I am now, ironically, living far away.
One of the high points of a recent trip back east (in '04) was visiting Philadelphia, where we have a family cemetery. We threw coins on Ben Franklin's tomb, rode the "duck" tour through the streets of town and then straight into the river, saw Independence Hall and the bell, and so much more. I miss those old cobbled streets ... ate a Philly cheese steak at Jim's on 6th Street. It was wonderful!!
I, like your sister, do work at a small-town paper, and though the pay is paltry and the recognition only local, it's a great job. I'm always learning something new (since I must know what I'm talking about, I must be quick to absorb information), and meeting so many people. I feel like I'm making a small contribution by printing stories about the people, both good and bad, and getting the truth out as best I can. Is her paper a weekly like mine?