Rome residents can look forward to an afternoon of "sport, antics, food and great company" at Villa Pamphilj park on Sunday 20 October, from 13.00 until dusk.
The event is free and open to all, and guests are invited to bring along their own refreshments for the giant picnic and participate in cricket, rounders and frisbee.
The event's organiser is sports enthusiast Caragh Evans, who says the event offers a chance to "meet new people and create an extended social community outside of the workplace."
Sport will play an important role on the day, with the rules of cricket and rounders being explained to the non-initiated, as well as posted on the event's Facebook page.
The games are open to everyone of all abilities, while non-sporty types are welcome to act as refereees or cheerleaders or just spectate "while drinking Pimms." Sporting equipment and bibs will be provided and, while Evans hopes for fine weather, if it rains she suggests touch rugby.
Lastly, why does the event have "summer" in the title if it is taking place in late October? "So that the feeling of summer can continue as the days get shorter and it keeps the fun happy mood going just that little bit longer", Evans says.
More information about the event see the Facebook page.