Today's (June 23) grand regal opening, will mark another historic moment for Heathrow airport at The Queen's Terminal which has been named in honour of the monarch.
The Royal celebratory event includes a tour of the airport's flagship £2.5bn building as well as a plaque unveiling for The Queen who will be accompanied by the Duke of Edinburgh, this afternoon.
Heathrow revealed an invitation was sent to Buckingham Palace, and was accepted two months ago, on April 23.
The old Terminal 2 was opened by The Queen in 1955, near the start of her reign.
Originally called the Europa building and built to deal with 1.2 million passengers a year, by the time it closed in 2009, the terminal was handling eight million passengers - five times more.
The terminal provided 54 years of service before it was demolished to pave the way for a completely new building, now capable of handling 20 million passengers a year.
The new Terminal 2 dubbed The Queen's Terminal has taken five years to complete and will be home to 23 Star Alliance airlines as well as Aer Lingus, Virgin Atlantic Little Red and Germanwings carriers.
A new covered court connects the main transport links to the terminal, and the building has a three wave steel frame roof which also floods the building with natural daylight.
On arrival at Terminal 2 passengers can see their loved ones off with a clear view of the runway.
Live coverage of the official opening on Monday (23) so follow me on Twitter @SalinaPatel1
T2 - THE FACTS:
£2.5 billion makes T2 one of the UK's largest privately funded construction projects
35,000 jobs as part of T2's construction
Six months of trials - including 4,000 bags per hour tested
26 airlines will move into T2 over six months
14,000 volunteers helped test T2 during more than 180 trials
1,700 training sessions delivered to prepare the T2 team
16 million passengers a year - capacity of 20 million
Eight A380 piers
36 immigration lanes plus 10 e-gates
29 security lanes
42 drinking water fountains
1,340 car parking spaces
60 check-in kiosks
66 self-service kiosks
99% of materials from the old T2 recycled or reused