Minoo Park (箕面公園, Minō Kōen, also spelt Mino or Minoh) is a forested valley on the outskirts of Osaka, just north of the urban sprawl. During the fall, it is one of the best places in the Kansai Region to see the autumn colours in a natural setting, as opposed to the attractive fall foliage found at temples and gardens. The colours are usually best in the second half of November.
Similar to Tokyo's Mount Takao, Minoo Park is the closest spot to the busy metropolis of Osaka to find a spacious natural recreation area. The park can be reached in less than 30 minutes from the downtown Umeda area. Another similarity, Takao and Minoo were both given quasi-national park status in 1967 to commemorate the hundredth anniversary of the Meiji Period (1867-1912).
https://www.japan-guide.com/e/e4019.html