How do I purchase tickets for the Forum of Caesar light show in Rome for June 2025?
They don't currently appear to be running this show. The Official website - Viaggio nei Fori - notes that "Tickets are not yet available for sale on Vivaticket or sales have been temporarily suspended or closed" when clicking "buy online"
https://www.viaggioneifori.it/en/
They are also unavailable via Tiqets, which is the vendor linked to the "Colosseumrometickets" site linked in the post above this one. When you click "Book now", nothing comes up. Digging deeper on that site, "Roman Forum and Palatine Hill: Entry Ticket and Evening Light Show" comes up as "Temporarily Unavailable."
https://www.tiqets.com/en/roman-forum-tickets-l146049/?partner=colosseumrometickets
It's possible they'll start the shows up again later in the season but for now...