Stave churches are a style of medieval wooden Christian church buildings, so named because of the post and lintel construction which is a type of timber framing. The load-bearing posts are called stafr in Old Norse and stav in Norwegian. Two related church building types are also named for their structural elements, the post church and palisade church, but are often also called stave churches. Read more on Wikipedia.
Carved wooden wall tiles from 13th century A.D., from Toenjum stave church, Laerdal, Western Norway, exhibited at Bergen museum.