Are there guided tours in English?
chee SO-noh VEE-zee-teh gwee-DA-teh. 'Guidate' — stress on the second syllable 'da'.
Ask at the information desk or ticket counter. Guided tours are often available for an extra fee and may need to be booked in advance.
Ci sono means there are (literally 'there exist'). Visite guidate are guided visits or tours. In inglese specifies the language. This phrase works for any language — substitute 'in francese', 'in tedesco' etc.
A che ora parte la prossima visita guidata?
What time does the next guided tour start?
Ask for the schedule once you know tours are available.
Quanto costa la visita guidata?
How much does the guided tour cost?
Tours are usually an extra charge on top of the entry ticket.
Posso unirmi a un gruppo?
Can I join a group?
Sometimes you can attach yourself to an existing tour.
Private licensed guides in Italy (guide turistiche abilitate) are highly trained and must pass regional exams. Official guides wear a badge. Be wary of unofficial guides who approach you outside major sites.