When I was 14, my buddy and I headed off to Europe for a month without parents. We were enrolled in a Spanish-language course that provided housing, meals, a daily schedule, and a nightly curfew. But for about four hours each afternoon and for entire weekend days, we were free to roam the lovely Spanish city of Salamanca without the least bit of supervision.
Since we were very mature eighth-grade graduates, we got into some trouble. For instance, I once got a mouthful of red wine vinegar after making a mistaken purchase at a grocery store. We also got chased out of a restaurant after accidentally exploding a glass ashtray using a butane lighter.
My kids aren't going on any overseas odysseys without me until they're at least a few years older than I was.