Skyway Summit

Skyway Summit is a high-altitude level located in the clouds above Peach's Castle. Mario must jump through a magical portal to reach it. The level consists of several floating platforms connected by bridges and jump pads. The platforms are shaped like clouds, with a few rocky outcroppings here and there.

The main power-up in Skyway Summit is the Feather, which allows Mario to glide through the air and perform a double jump. There are also a few Wing Caps scattered throughout the level, which give Mario the ability to fly for a limited time.

References:

* https://www.youtube.com/watch?v=syJC43YzkJY (The rip of the soundtrack)