Sonauli is gateway town on the India-Nepal border. It is not clear how this town came to have a Japanese garden, but one can speculate. In the 7th century B.C. this was a small republic ruled by Suddhodana, a descendant of the Central Asian Scythians, known as the Sakhas. In 633 B.C., the Suddhodana queen, Mahamaya gave birth to a child on the way from the capital of Kapilavastu to her parents' home. That child was Gautama Buddha and the location was known as Lumbini. Lumbini is now a large Buddhist temple complex comprised of New Lumbini Village, monasteries and temples, and a sacred forest. There is a Nepalese temple near the entrance. The Japanese garden is supposed to be nearby and it encloses a Tibetan temple.
I shall go behind the mountain.
Go there too, O moon,
Night after night we shall keep each other company.