A young Nottinghamshire couple who won £45m in the EuroMillions are planning to build a futuristic eco-house.
Matt and Cassey Topham, from Stapleford, scooped the jackpot in February 2012 and said they would spend it on their "dream home".
The £5m eco-friendly house, called Serenity, will be built in an undisclosed part of Nottinghamshire.
It will feature a 10-car garage shielded by a waterfall, a grotto-like swimming pool and a botanical garden.
At a press conference last year, Mr Topham, 24, who worked as a painter and decorator with the family firm, said: "I have often painted these huge houses and wondered what it would be like to live in one.
"Now I can find out."
Proposals for the house include four wings or 'hubs' covered in solar panels and a dramatic sweeping staircase inside.
The plans also involve knocking down a country mansion which the couple bought for £1.2m.
The architects behind the designs have described the eight-bed property as a "21st Century country house and hidden retreat" which was "ultra-low in energy use but also high in aesthetic aspiration and quality."
They said they hoped the house would push the boundaries of environmental and architectural design.
The planning application was submitted to the local authority on Thursday and is expected to be considered this summer.