皇居 This is the large house and garden of Japan’s emperor, a portion of which opens to public visitors. In the Edo period, it used to be the Edo castle where Tokugawa Shoguns lived, and the emperor moved from Kyoto when Edo period (Edo Shogunate) ended. Because it was the castle, the entire premise is surrounded by the moat, and m
ost of the original buildings were gone, but still, some historic buildings and gardens remain. It’s an excellent place to enjoy strolling, especially in the spring season for cherry blossoms. Basically, only Higashi-Gyoen opens to public visitors, and Inui street is seasonally opened in the cherry blossom season. Also, the free tour in the premise of Imperial Palace is available on weekday, that is reservable from http://sankan.kunaicho.go.jp/english/index.html. If it’s fully booked, then try same-day registration, joining a queue on the day. Tickets are distributed from 8:30/12:00 before opening (opening time morning 9:30 afternoon 13:00, the whole tour takes 1h15min).