There is a particular moment on a family holiday in Rome when the teenagers stop pretending. It usually arrives in the third museum of the trip, and the only cure is to leave the city and do something physical.
Fortunately the country around Rome is unusually good at this. There is white water an hour east, gorges to descend, caves with rivers in them, ziplines over a mountain edge, quads on farm tracks, a surf school on the beach and skydiving in two directions.
Most of it needs no experience and all of it is guided. Minimum ages are set by the operator and shown on the card — for the harder things it is often around twelve to fourteen, which is exactly the age this page is for.
The thing that makes these days work is not that they are exciting — plenty of things in Rome are exciting and get nowhere. It is that the teenager is the one doing it. Nobody is explaining anything, nobody is queuing, and for three hours they are better at something than you are, which is the whole trick.
Book by minimum age rather than by enthusiasm, because the operator's number is the one that decides. Adventure parks take almost anybody with a height rule; caves and the easier rafting tend to open up around eight to ten; canyoning, the flying things and the harder off-road are usually twelve to fourteen and up. All of it is on the card in the operator's words, and a phone call settles the edge cases.
The underground grid is the one worth arguing for even when it is not the one they pick. A town with a second town underneath it, a rope bridge strung inside a medieval cistern, a river you wade through in a cave — it is the one thing on the list that has no equivalent at home, and it is the day they describe when they get back.