It is a landmark and a popular meeting spot in Americamura, a town that nurtured Kansai youth culture. Originally called "Mitsugaien" after the war on waste road land, this triangular space has been in the spotlight since the 1970s, and as Americamura has developed, it has come to be affectionately known as "Triangle Park." In recent years, it has become a popular spot for young comedians to perform their comedy routines for free, with the young people strolling around the area acting as their audience. The long-established "Koga-ryu Takoyaki Shop," which has been located directly in front of the park for the past 30 years and is the originator of the "mesh-kake mayonnaise," always has a line of people waiting. Listening to a young comedy duo perform while munching on takoyaki is a unique experience at Triangle Park.