Held annually from mid-February through until late March, the Mount Tsukuba Plum Festival showcases the beauty of around 1000 plum trees in varying shades of red and white. At the top of the plum-tree dotted hillside there's an observation stand where visitors can enjoy picturesque views of the blossoms and the greater Kanto region. On exceptionally clear days, that view can even include skyscrapers on the Tokyo skyline and Mount Fuji!
Admission to the festival is free of charge.