The Grand Blue Express is a luxury aquarium dining restaurant in Ueno, Tokyo. The renovated space limited to 95sqm took on the 5th floor of a mixed-use building. Inspired by luxury trains, the design tries to overcome the small space limitations to both accommodate the aquariums and provide the luxurious atmosphere the restaurant aims to implement. The dining room takes the form of a corridor coach that serves the individual cabins on both sides. each cabin is equipped with an aquarium installed to mimic the train windows, creating the impression to be inside a train cruising underwater.