A large film crew has arrived in Hartlepool for the making of an ITV drama.
Numerous vehicles have set up in the car park of the National Museum of the Royal Navy off Marina Way.
It appears to be filming as part of series 3 of the hit series Victoria but ITV and the museum were unable to confirm this.
Actors in Victorian style costumes have also been seen making their way from the car park to the set.
Horses and an old carriage could also be seen outside the museum.
Character names on caravans at the base included Dr John Snow, who was Queen Victoria's anaesthetist, and the Duke of Monmouth,
The museum's recreation of a 19th Century dockside and HMS Trincomalee starred in the second series of Victoria after the makers and star Jenna Coleman, as Queen Victoria, filmed there in February and May of last year.
The scene recreated the moment the monarch led the launch of the Trafalgar, which really took place in Woolwich in June 1841.
The attraction is closed today to visitors and reopens as usual tomorrow (Wednesday).
Roslyn Adamson, general manager of the museum, said: “Filming for an ITV Drama is set to take place at the museum site and therefore it will be closed to the public for one day only.
"We are proud of the museum’s historic attractions and assets, and are often approached for them to be featured on various media platforms, including film and television.
“Film and television tourism is another effective means of boosting revenue by attracting more visitors to the museum site, so we always try, where possible, to seek out relevant opportunities and accommodate these kind of requests."
Series three of Victoria officially began filming on May 21 this year. It will be made up of eight episodes but no air date has been released yet.
Starting in 1848, the third instalment of the lavish drama will depict a turbulent and uncertain time for both Europe and the monarchy.
Creator Daisy Goodwin said: “Victoria and Albert are the most famous couple of the nineteenth century, but underneath the united facade, their relationship is at breaking point and it is a struggle for mastery that neither side can win.”