When Ozma became a hermit he lived in a remote house. It was during that time where he was visited by four sisters, who each in their own unique ways were kind to him. Because of this, he bestowed upon them magical powers. It is seen in "The Four Maidens".
The house is made from wood and has two floors. It has large windows and a simple wooden door. The interior is lived in with a rig, chest, fireplace and chair for Ozma to look out the window.
Outside the house is a small garden for growing food. A simple fence surrounds the house and garden.
One day four sisters visited him and each in their own unique ways show him a kindness. The first, Winter, encourages him to meditate and reflect; the second, Spring, brings him fruit and flowers and revitalizes his garden; the third, Summer, convinces him to step outside and embrace the world; and the fourth, Fall, urges him to be thankful for what he has.
Moved by their kindness, Ozma empowers the four sisters so that they may travel throughout Remnant continuing to share their gifts. The four sisters promise to return and visit him yearly.
Screenshots - RWBY: World of Remnant