The Queen and Duke of Edinburgh have visited the seaside city of Brighton for the first time since 2001.
The royal party watched performing arts students in a concert marking the 200th anniversary of the Theatre Royal.
Afterwards, the Queen visited the Jubilee Library and the duke saw a workshop at the Pavilion Theatre.
The couple attended a reception at the Dome followed by lunch at Brighton Racecourse. They were visiting community projects in the afternoon.
The concert at the Theatre Royal was given by students from Brighton and Hove Music and Performing Arts who performed songs from the last 200 years, joined by American soul singer Carleen Anderson for two of the ensembles.
Representatives from voluntary, sporting and arts organisations were meeting the couple at the pre-lunch reception.
General manager of Brighton Racecourse, Matt Hudson, said the course was "incredibly honoured" to welcome the Queen back in person.
He said: "Her Majesty runs horses here on a regular basis.
"Her last winner was Hunting Tower on the final day of the 2006 season."
After lunch, the Queen was unveiling a plaque at the Roundabout Children's Centre, which provides services to children under five and their families.
The duke was visiting the Crew Club, a community clubhouse providing activities and clubs for young people on the Whitehawk estate, which has a computer and music suite, a training kitchen and a multi-purpose hall.
Mayor of Brighton and Hove, Councillor David Smith, said: "We are proud to be giving them a snapshot of the many cultural highlights the city has to offer, as well as the fantastic work being done locally for children and young people."
Phyllida Stewart-Roberts, the Lord Lieutenant of East Sussex, said: "Since Her Majesty was last here in 2001, great things have been happening.
"This visit will give Her Majesty and His Royal Highness the opportunity to experience the essence of the city - modern development in an historic setting."