The Queen will officially reopen Britain's first public museum after a £61 million redevelopment at Oxford University.

The Ashmolean Museum, which hosts a collection of man-made and natural specimens from across the world, has 39 new galleries, an education centre and Oxford's first rooftop restaurant.

The museum, which first opened on May 24, 1683, attracted 22,000 people on the first weekend since its redevelopment last month and now attracts an average of 6,000 people a day.

Lord Patten of Barnes, the university's chancellor, said the official opening by the Queen is "a tribute to the integral role these world-class collections have in supporting teaching and research, and in providing great museums and educational resources, free to all visitors".

Museum director Christopher Brown added: "Her Majesty's visit is a great honour for us and a historical moment for Oxford.

"It not only marks the success of the transformed Ashmolean, Britain's first public museum, but it celebrates the opening of our new doors to the widest audience, now and in the future."

Later, the Queen will visit Brasenose College, which is celebrating its 500th anniversary.