maple-leaf viewing; autumn leaf viewing
Refers to the activity of going out to enjoy the autumn colors, especially maple leaves. Similar to 紅葉狩り (もみじがり), but 観楓 is a more formal or literary term.
In autumn, many people go out for maple-leaf viewing.
This park is known as a famous spot for viewing autumn leaves.
autumn leaf-viewing party
Compound of 観 (かん, 'viewing') and 楓 (ふう, 'maple'). The reading ふう for 楓 is a relatively rare on'yomi, making this a somewhat formal or literary term.