Ascension Day in the middle of England means Well Dressings in some villages. About probably the most famous one the BBC said this:

Tissington Well Dressings is an annual festival in Derbyshire that dates back to the 14th century. It is believed that the tradition began when locals believed they escaped the Black Death due to the water supply's purity. The festival is religious but has a secular tone, and the themes of the tributes to the wells vary, with this year's decorations celebrating events such as the Queen's 90th birthday, the 150th year since Beatrix Potter's birth, and the ancient game of Shrovetide Football. Wells are decorated by applying clay on wooden boards, using materials like coffee beans to make an outline, and placing twigs, wool, and petals on to the surface for different color effects. The festival attracts 35,000 people over the course of a week, and a one-way system operates in the village during the festival.

[This is what the dressed wells look like.