Holidaymakers in Weston-super- Mare have spent the past week enjoying their ice creams, walks on the pier and donkey rides – oblivious to the fact that just yards away, Britain’s most renowned street artist appears to have been putting together a secret exhibition.

The site of the old Tropicana lido has been sealed off, with locals told a Hollywood production company was filming.

But it is now understood that guerrilla graffiti artist Banksy – whose true identity remains a mystery – is due to open a show called Dismaland there later this week.

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Banksy is preparing a secret pop-up exhibition and using a Hollywood film set as a cover-up in Weston-super-Mare, it has been claimed. Above, the site where the show is thought to be taking place

The real thing: The renowned street artist's 'Dismaland' show is expected to open later this week in Weston-super-Mare, a source alleged.

A large pink Disney-style castle, pictured above, could yesterday be seen at the seaside resort, and Banksy – who is from nearby Bristol – has previously used Mickey Mouse in his satirical street stencil art.

Other works of art towering above the hoarding include two petrol tankers bent into a ‘S’ shape by American artist Mike Ross, a huge beach windmill toy, and the figure of a horse built from scaffolding.

Speculation about Banksy’s involvement began to mount when a woman believed to be his manager, Holly Cushing, was spotted at the site.

The woman thought to be Miss Cushing – who is named as an executive producer on Exit Through The Gift Shop, a film about Banksy – was seen chatting to security guards.

Photographs show artwork being put up on the site, which officials have said is being used for a film

Previous reports suggested the seaside town was being transformed because Atlas Entertainment was filming a crime thriller called Grey Fox there. Signs have been put up on the metal railings around the old lido, which state: 'Crew Notice Grey Fox Productions'

Financial records also show that Miss Cushing set up a company called Dismaland Ltd with Simon Durban – the man believed to be Banksy’s accountant – earlier this year.

The exhibition is understood to be opening to the public on Friday, with officials expecting thousands of people to descend on the seaside resort.

It is believed to be a satirical and sinister comment on theme parks such as Disneyland, pictured inset. Locals last night said the attraction could be good news for the town and could ‘revive the fortunes’ of the Tropicana.

#In 2008, Banksy was reportedly ‘unmasked’ as Robin Gunningham, a former public schoolboy from Bristol. At the time Banksy’s agent refused to confirm or deny the story.

A spokesman for Banksy did not respond for a request for a comment on the new exhibition last night.

Rumours went into overdrive after a woman believed to be Holly Cushing, who is widely thought to be Banksy's manager, was spotted at the site earlier this month (pictured)

Residents and tourists walk in front of the old lido, which has been transformed in the last week

One of the other sculptures seen on the site appears to be the Big Rig Jig - a petrol tanker bent into a 'S' shape by American artist Mike Ross

The blue cab of the bent lorry could just be seen, with many of its wheels sticking vertically in the air

A wider shot shows the scale of the build. The exhibition is believed to be opening to the public on Friday, a source alleged

Some of the sculptures have a seaside theme, like this multicoloured windmill with white material draped over it

A metal sculpture of a horse was also erected on the site, with two people wearing high-visibility jackets working on putting it together

The two men used a cherry picker to reach the sculpture, which towered over the fence surrounding the old lido

The sculpture of the horse on its two hind legs is made of a set of metal poles, which are intricately connected together

Some white graffiti could be seen underneath a string of fairy lights at the site - although it is not clear what it says

Three men stand next to a metal fence, which blocks off one of the entrances to the site

Fans have taken to social media to discuss the possible show, which many are saying is a sinister twist on popular tourist resort Disneyland