Fascinated by the beauty of the traditional Polish landscape, he bought a plot of land in Puszcza Bolimowska, near the river Rokita. In spite of the heavy workload and difficulty of the work, Jan and his relatives formed the land into multiple terraces and planted trees and bushes. After nature infused life into Jan's land, it became the inner sanctum of the artist. After retiring from his work, he founded the Forest Gallery in 1983 Ursus. It became so famous and fabled that trips from around the world were taken. A huge number of guests visited Jan's Gallery. The extremely long list of visitors includes participants of school trips, scouts, arts students, and ordinary people, who have all signed in the commemorative book.