The history of the Wäldchestag forest festival cannot be clearly established. In the absence of documentary evidence, two variants of its origin are considered possible.
Traditionally, the craftsmen of Frankfurt held their large, festive processions at Whitsun, and numerous craftsmen's festivals were held during spring, mostly, it is believed, due to the fact that the administrative year in the free imperial city ran from 01 May to 30 April, a fact that was not changed until 1729. The term of office of the guild leaders began with the new administrative year, which was also a reason for extended celebrations and merriment.
It is possible that the beginning of the third Whitsun holiday may also be validated by the custom of driving the cattle out to pasture for the first time after Whitsun, with farmhands and maids going out with them to feast on "food and drink". Frankfurt street names such as "Pfingstweide" (Whitsun Meadow), which were mentioned as early as 1300, still bear witness to this old Whitsun tradition today.
Even if nowadays only a few people get the day off on Wäldchestag in a metropolis like Frankfurt, as would have been the old tradition, a visit to the city forest on the Whitsun weekend and especially on Tuesday - Wäldchestag - is obligatory for most Frankfurt locals. Those who aren;t granted time off from their company simply meet up with their colleagues for an after-work forest party in one of the festival's beer gardens or enjoy a cool glass of wine in the shade of the trees at the weekend.