A few months back I was reading most of the Vesuvius books I have around here, and Herculaneum (which is mostly not open to tourists, or to much of anyone else either) right on the slopes of the mountain had a gymnasium. The day of the eruption, the sports equipment was set out and ready for use in some kind of organized games which were, uh, interrupted. Also in Herculaneum were found quite a number of wooden artifacts, some carbonized from the heat, including doors which still swing fine on their hinges.
It’s my understanding that Herculaneum was buried under hot sliding mud and is therefore hard to excavate, unlike Pompeii, which was buried under pummace. It’s my understanding that much of Herculaneum has not been excavated.