This two-story brick building was constructed in 1912 as a customs house.

After being used as a customs house until 1927, the building was repaired and restored in 1994 into a Neo-Renaissance-style modern building.

There are an atrium and lounge on the first floor, and an observation room, which provides a panoramic view of the Kanmon Strait, on the second floor.

The building also houses the parlor Mooon de Retro, where you can enjoy seasonal fruits, an ideal place to take a rest while strolling around the Mojiko Retro area.