The original Willow Tea Room, designed by Charles Rennie Mackintosh, has opened its doors to the public following a £10 million restoration.

The historic building, designed by Mackintosh in 1903, was saved from closure four years ago and has reopened to mark the 150th anniversary of the architect’s birth.

Now named Mackintosh at the Willow, the Glasgow tea room is expected to welcome at least 360,000 visitors a year thanks to charity The Willow Tea Rooms Trust.

Chair of the Trust, Celia Sinclair, said: “It is marvellous to see our first guests coming over the threshold of the restored building.

“We have worked hard to bring the building back to the original interior designed by Mackintosh of 1903.

“I hope that visitors will enjoy a cup of tea and light lunch in these amazing surroundings.”

The tea toom, which was commissioned by Miss Kate Cranston, is recognised internationally as it is the only surviving tea room designed entirely by Mackintosh.

The designer had complete control over the architecture and the decor, even down to the design of the cutlery and the waitresses’ uniforms.

As well as the 200-seat tea room, the new heritage site will also include a gallery, billiard room and an exhibition, retail, learning and education and conference suite in the adjoining building.

Ms Sinclair added: “Mackintosh at the Willow along with the visitor centre and learning and education suite are an integral part of the aims and objectives of the trust to educate and inspire, restore and preserve this iconic piece of Glasgow’s heritage.”

The attraction, at 217 Sauchiehall Street, has a predicted annual turnover of £3m and will operate as a social enterprise and hub for Glasgow, creating 40 full-time roles.

The Trust has also worked with the The Prince’s Trust and Dumfries House to recruit and provide training for young people.