Lodge 640 History 
The Midorigaoka Temple was designed by architect Ken Sakano and built by Seki Kōmuten, a local construction company. The unusual design represents a compromise between the need for maximum floor space in the upper-storey lodge room and the strict building-to-land ratios imposed by Yokohama City.
Below the overhanging second storey is parking space for two vehicles. The ground floor contains a conference room, office, kitchen space, and toilet facilities. The upper floor is reached by a narrow staircase.
The building is of reinforced concrete and is faced with glazed ceramic tiles chosen for their similarity to those fronting the old YIS Temple. A state-of-the-art electronic security system links sensors within the building to a twenty-four hour surveillance centre.
The building is fully air-conditioned and a glazed door in the conference room leads to a small garden space at the back.