Visitors and rail enthusiasts were queuing up this morning for a trip on 'Bittern'.
The A4 locomotive, which is the sister of the famous Mallard, was in North Yorkshire for the start of the Swaledale festival.
It's the last chance to see six of the world's most famous locomotives in County Durham today.
The trains are on show at Locomotion, the National Railway Museum in Shildon.
Six of the world's most famous locomotives have gone on display together in County Durham.
They are on show for the next week at Locomotion, the National Railway Museum at Shildon.
The engine Mallard is taking pride of place, at the conclusion of events to mark the 75th anniversary of its record breaking run.
In 1938 Mallard became the world's fastest steam locomotive when it reached a speed of 126 miles an hour on the East Coast Main Line.
Mallard was reunited with its five sister locomotives, known as the A4 Class, as part of the anniversary commemorations.
Two of the engines were brought from North America and will shortly be returning home at the end of their two year UK visit.
The event is being called the 'Great Goodbye' and will continue until 23rd February 2014.
The Institution of Mechanical Engineers presented its coveted Heritage Engineering Award to Mallard in recognition of its designer's engineering genius.
John Wood from the Institution told ITV News why he believes the locomotive is so special.
Mallard, the world's fastest steam locomotive, has received an award on the anniversary of designer Sir Nigel Gresley's death.
Gresley's grandson, Tim Godfrey, was born the same year as Mallard broke the world speed steam record. He attended the ceremony in York.