There are 23 stores spread all over Tokyo
Don Quijote, or simply DonQui, are stores selling a myriad of stuff, from cosmetics to confectionery, costumes and electronics. Some sell medicine and many are open 24-hours a day. It is one of those places that could only exist in Japan and are quite fun to explore. There are items on sale that will crack you up. I went into one with some friends after a stint at a karaoke place in Shinjuku and we got seriously lost in the place. We managed to find the way out not before laughing our hearts out (well, we had had a bit too much sake).