Echizen Ono Castle

Echizen Ono Castle rises to the top of Mount Kameyama (249 meters above sea level) in Ono City, Fukui Prefecture.
The castle was initially built around 1580 but burned down in 1775. The current castle was reconstructed in 1968.

Early each morning, the cool air from the surrounding mountains gather in the Ono basin, creating a sea of white clouds. Ono Castle appears to float above the clouds when this happens, earning it the nickname "Castle in the Sky."
Depending on the weather each day, there are days where the cloudscape may or may not appear. However, from October through April, the likelihood of the "Castle in the Sky" occurring is high! Supposedly it is most likely during November.
The Castle in the Sky view typically appears from sunrise to around 9 am.
The scene is particularly likely to unfold when it rained the previous day or when there is little wind blowing.

It isn't a sight always available every day, so there's a certain extra feeling of satisfaction if you do manage to catch it!