JR East turns five Shinagawa-area stations into a six-month treasure hunt
A guidebook-driven mystery trail through Hamamatsucho, Tamachi, Takanawa Gateway, Shinagawa and Oimachi runs to next March — a low-cost way for Japan's biggest station-area landlord to keep feet moving through the corridor it is rebuilding around Takanawa Gateway.
East Japan Railway Company (JR East) has launched a six-month treasure hunt spanning five stations in what it calls the "Greater Shinagawa Area" (広域品川圏), running from 30 September 2026 to 22 March 2027, according to a company release.
The event, titled "How to Walk the Greater Shinagawa Area" (広域品川圏の歩き方), covers Hamamatsucho, Tamachi, Takanawa Gateway, Shinagawa and Oimachi. Each station carries a free guidebook and its own roughly 40-minute mystery-solving course; participants can start at any of the five and must clear all of them to enter a prize drawing, JR East said. The courses were produced with Takarash Co. and Chikyu no Arukikata Co., the publisher behind Japan's best-known independent-travel guidebook series, lending the campaign an outside imprimatur rather than a purely in-house tourist gimmick.
Winners can redeem meal vouchers at three restaurants inside MoN Takanawa and two venues at Hotel Metropolitan Ooimachi Tracks — both JR East-linked properties — and entry to the prize draw requires the Shinagawa area's official LINE mini-app, tying participation to the group's own digital channel.
The mechanics matter more than the theme. JR East is the largest station-area retail landlord in Japan, and a near six-month run threading five stations — including Takanawa Gateway, the newest stop on the Yamanote line and the anchor of the company's wider Takanawa Gateway City development — is a cheap way to manufacture cross-station dwell time while that corridor is still being built out. A guidebook and a LINE mini-app cost far less than another retail fit-out, and both keep feeding foot traffic and participation data back into the group's own hotels and restaurants.