Up to 40,000 people are expected in the Norfolk towns of Sheringham and Holt as the clock is turned back to the 1940s and wartime Britain.
The North Norfolk Railway, which runs steam trains between the two towns, is holding its annual 1940s weekend but this year it marks 80 since the outbreak of the Second World War.
It is the first major event in the seaside town of Sheringham since a large sinkhole that closed the High Street this summer was repaired.
Watch a report by ITV News Anglia's Kate Prout
The organisers says it is the biggest event of its kind in Norfolk.
There will be military and civilian vehicles, music, dancing, ration food, re-enactments and an intensive steam hauled train service.
The 1940s weekend also encompasses the town of Sheringham and Holt with a amount of entertainment taking place on the stations of Sheringham, Weybourne and Holt and other venues in the towns.