 Gardiner's first task on arrival in Japan was to design and supervise the construction of new school and dormitory facilities for St. Paul's School in Tsukiji, Tokyo.The three-story, red brick, school buildings in an American Victorian Gothic style were completed in 1881, but suffered significant damage in an earthquake in 1894.Gardiner was also responsible for the design of adjacent Holy Trinity Cathedral, completed in 1890, which served as the center of Episcopal Church mission activity in the city.