Japan’s first Protestant Church of England was built in 1862 on a hill in the Higashi-yamate of Nagasaki.
Many European people who lived in Nagasaki walked along the slope to the church to worship every Sunday.
Most people of Nagasaki in those days referred to all Europe people as “Hollanders, because of the influence of the Dutch who lived on Dejima Settlement during Edo period..
Therefore, they called the slope which foreigners often walked along Hollander Slopes.