Britain celebrates Queen Elizabeth II's 70 years on the throne

The nation holds 4 days of parades, parties and pageantry to salute its longest-serving monarch.

Britain's streets are festooned with flags, tea parties and baked cakes as the country celebrates Queen Elizabeth II's unprecedented 70 years on the throne.

Celebrations began with the queen’s birthday parade, known as Trooping the Color.

– A Royal Air Force flypast was watched by crowds in London and four generations of the royal family from the famed Buckingham Palace balcony.

An 82-gun salute was fired in honor of the queen as part of Thursday's Platinum Jubilee celebrations.

A 21-gun salute is most common