Dulwich Picture Gallery, to 15th May
The only early 20th-century Norwegian painter that most Britons have heard of is Edvard Munch, but this show of his younger and shorter-lived contemporary Nikolai Astrup (1880–1928) should give us another. Almost all his works are in Norway, where they are revered, and there is nothing in any British gallery.
The last fourteen years of his life were spent near his childhood home in Jolster by a famous trout lake in the Sunnfjord district, where his farm is now a museum. His brightly coloured, naïveseeming paintings of the area resonated with his newly reborn country, making it an enchanted place of myth tempered by humanity.