I'm based in Washington DC, although travel very frequently for work (visas for the US and banking compliance - boring). This year, it's been mostly Mexico City. Last year, it was India, UAE, and Lebanon. In the near future, I'll probably be working in Cuba quite a bit, since there's a lot of work to be done in my field re-establishing connections between the US and Cuba, and I'm a Spanish speaker.
Any of you need advice about DC, I'm happy to help.