Is it allowed to touch the ruins?
per-MES-so — double 's', stress on second syllable.
Ask before touching ancient surfaces. The question shows respectful intent. The answer at most Italian sites is 'no' for most surfaces, but guides may allow touching specific robust elements.
Italian law protects all archaeological heritage. Touching ancient surfaces — especially painted or mosaic ones — can cause damage through skin oils and heat. Signs say 'non toccare' (do not touch). Penalties for damaging cultural heritage are serious. Guides at some sites allow touching deliberately hardened stone elements for educational purposes.
Posso appoggiarmi a questo muro?
Can I lean against this wall?
More specific — leaning can damage already-fragile structures.
È vietato sedersi sulle rovine?
Is it forbidden to sit on the ruins?
Sitting on ancient stones can damage them — usually prohibited at major sites.
Perché non si può toccare?
Why can't you touch it?
Children often ask this — good opportunity to explain conservation.
Italy has faced challenges with tourists damaging ancient sites — from names carved in the Colosseum to graffiti on Pompeian walls. Penalties can reach several thousand euros. The Italian carabinieri have a dedicated cultural heritage unit ('TPC — Tutela Patrimonio Culturale') that investigates heritage crimes.