Got a work outing to TankFest 2023 at the Tank Museum. Established in 1947, with nearly 300 vehicles from across 26 odd countries. A chunk of which are in working condition, including such as the German Tiger 1, and the British WWI Mark I.
Technically it was started in 1923, so it's been around for a century, but the 1947 date is when it was opened to the public.