Legoland has announced it will open a multi-million pound new section where “mythical creatures come to life” in spring 2021.

It will be the Windsor theme park’s largest single investment and expansion since its gates opened in 1996.

The area under construction, named Lego Mythica: World of Mythical Creatures, will include new rides, attractions and experiences.

It has been developed in collaboration with children aged seven to 11 and their parents.

A promotional video released on Friday features huge footprints shaking the resort, a winged creature flying overhead and an ice storm.

The theme park’s divisional director Thomas Jellum said: “What better way to celebrate our 25th birthday than by unveiling a completely unique experience like nothing else we have launched at the resort since we opened.

“At the heart of Lego Mythica: World of Mythical Creatures will be epic rides, including a UK first, and breathtaking mythical creatures designed to capture children’s imaginations and inspire them to build and play.

“Our new land has been two years in the making and co-created with families to make sure it delivers what children and their parents want from a theme park in 2021.

“We can’t wait to share more details soon.”

Legoland was closed for three-and-a-half months from mid-March due to the coronavirus pandemic.

It reopened in July with a series of new safety and hygiene measures, including a reduced capacity and mandatory face coverings for visitors aged 11 and above in some areas.