With a site as large as Ostia Antica, a guide is a must and Context's Benedetta, an archaeologist, was informative and fun to be with. The small size of Context's groups makes for a relaxing trip with everyone having a chance to exchange ideas. For a day away from the crowds in Rome, Ostia's a great choice - like a walk in the country, but with the plus of walking through streets where Romans once lived, cooked and played.
I've done several Context tours over the years and they've all been outstanding.
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