Originally constructed in 1576, Maruoka Castle (???, Maruokaj?), is one of just twelve castles remaining in Japan that have survived the post feudal ages with their castle keeps (donjon) intact. The relatively small, 3-story keep is considered the oldest in the country and exhibits a few interesting design features such as stone roof tiles and a hidden level that is invisible from the outside. The castle is also known by the nickname "mist castle" which comes from a legend about thick mist hiding the fortification from approaching enemies.
Maruoka Castle stands on top of a small hill in the plains north of Fukui City. The interior of the wooden structure is preserved.The grounds also feature over 400 cherry trees that typically bloom from early to mid April. An annual cherry blossom festival is held during the first three weeks of April during which the trees are lit up in the evenings by over 300 paper lanterns.
