Have you ever explored the Smithsonian Institute-affiliated tours? I haven't, but I keep returning to their website to lust over the offerings, as they look pretty wonderful--educational travel to interesting places all over the world. Perhaps a Ziner has had personal experience with Smithsonian travel and will report.

Here's the link to their terrific website: http://smithsonianstudytours.si.edu/sst/start.htm

There are several nice search features for pinpointing both domestic and international tours that might interest you--by geographical destination, special interest (e.g., natural history, performing arts, railroading, *cuisine* (very topical on the Zine at the moment), etc.) and by month of desired travel. Happy trails,

Diana Ball Houston, TX