Avengers: Doomsday Filming Plans Detail Returning MCU Location, as Marvel Seeks UK Council Permission to Film in Windsor

A request to film Avengers: Doomsday scenes, submitted to a local UK council, includes mention of a returning location from a previous MCU film.

As BBC News reports, Marvel has requested permission to build a film set within Windsor Great Park, and asked the Royal Borough of Windsor and Maidenhead for use of the area in August.

Detailed plans for the set name it as a specific location seen in a recent MCU film that now looks set to return in Avengers: Doomsday — though some fans have suggested this still could be a decoy, as Marvel attempts to keep its famously secretive filming plans under wraps.

Warning! There may be Avengers: Doomsday spoilers ahead!

According to the plans, Marvel is seeking to build a set named Annie Reynolds' House within Windsor's park. And if you've seen Thunderbolts* / The New Avengers, that house name may sound familiar.

Annie Reynolds is the mother of Robert "Bob" Reynolds, the character who later becomes Sentry and his evil alter ego The Void. In the movie, viewers get multiple flashbacks showing Bob's troubled childhood, often spent in the attic of Annie's home. But the location is also used as the setting of a labyrinthine version of Bob's consciousness.

Of course, Bob aka Sentry has already been confirmed as returning within Avengers: Doomsday, so perhaps the return of his prison-like mind palace should not be a surprise. The last time we see Bob, during Thunderbolts' post-credits scene, the character has been left powerless, though this seems likely to change. But does the return of flashbacks to his childhood home suggest we'll be seeing The Void return as well?

While filming is only set to place at the location for one day in August, Marvel's plans request 10 weeks of access due to its need for construction (and deconstruction) afterwards — suggesting a relatively substantial set will be built.

Intriguingly, this isn't the first time that Annie Reynolds' house has been mentioned as an Avengers: Doomsday film set, either — as plans seemingly for this construction were discovered by a TikTok user who gained entry to Marvel's main film set last month.

Marvel recently delayed both Avengers: Doomsday and Avengers: Secret Wars to December 2026 and December 2027 respectively. The Fantastic Four: First Steps, Spider-Man: Brand New Day, and the two Avengers movies are currently the only upcoming MCU films with confirmed release dates.

This week, we learned that Marvel shot a fake Thunderbolts* ending scene that included a title that wasn’t The New Avengers.

Photo by Axelle/Bauer-Griffin/FilmMagic.

Tom Phillips is IGN's News Editor. You can reach Tom at tom_phillips@ign.com or find him on Bluesky @tomphillipseg.bsky.social