Tokyo, the capital of Japan, has such an exciting and diverse, urban cultural landscape. Most people who visit Tokyo are well aware of the Harajuku fashion district, put on the international fashion map by roaming global street photographers. However, I also recommend you take a morning out of your itinerary to visit the neighbourhood of Koenji.
A short distance from Shinjuku station (click here for the metro map), Koenji has an enormous selection of vintage fashion, jewellery and accessories boutiques to tempt. There are vintage stores packed with retro American brand names such as Levi's, Nike, American Eagle and loads of military wear. You can find beautiful second hand kimonos, silk scarves, a gorgeous selection of mid century clip on earrings and stunning gold tone brooches. High end vintage pieces from Hermes, Burberry, Gucci, YSL and Chanel are also on offer, but the price tag on these pieces is hefty.
When travelling Japan, I found Youtube to be particularly helpful. I like to have a few visual reference points when venturing into a less touristy area. I found a great clip here for Keonji's vintage fashion scene, featuring Samual Thomas, a British Fashion journalist. The great thing about Koenji and much of Tokyo is that you really can delve in and explore, finding fantastic treasures, as travel keepsakes along the way.