Estadio Antonio Di Giácomo

Union de Arroyo Seco does not fill a stadium so much as loan out a piece of its home town's street grid: the ground sits where Rivadavia meets Humberto Primo, with no separate address of its own beyond that crossing.

The name goes back to 9 July 1998, when the club rededicated the ground to Antonio Di Giácomo, a longtime club director who was 85 at the time and stood at the ceremony marking the change. It is a small honour, tied to one man's decades inside the institution rather than to any single match played there.

A rebuild through 2025 gave the ground new stands and broadcast booths, and left it with room for 1,000 spectators on a pitch measuring 96 by 66 metres, kept, by the club's own account, in excellent condition. What the surface is made of, and what capacity the ground held before the work, has not been recorded.

The stadium is otherwise a modest, single-tenant venue, built for a lower-division side rather than for crowds. That changed briefly in profile terms: Primera C paired Union de Arroyo Seco's ground with Leones FC, the club tied to Lionel Messi's family, for a home fixture set for March 2026, putting a stadium of a thousand seats into a fixture list it would not otherwise attract attention from.