Karl to Fushigi na Tou
Japanese title: カルルとふしぎな塔
Type: TV
Source: Original
Episodes: 26
Status: Finished Airing
Aired: Oct 8, 2010 to Apr 15, 2011
Broadcast: Unknown
Duration: 5 min per ep
Rating: PG - Children
Studios: Nippon Animation
Genres: Adventure, Fantasy, Mystery
Demographics: Kids

The story centers around a mysterious tall tower built from an (unsteady) stack of building blocks. Every morning, noon, and evening, an old timekeeping man rings the bell in the tower to confirm the time for the local townspeople. However, one day at noon, the tower bell fails to ring — leaving the townspeople confused about when to eat lunch. The fantasy adventure begins when Karl, an inquisitive boy living in the town, decides to go to the tower's plaza to see what is the matter.

(Source: ANN)