When Tsukiji's shrine was first built in the mid-1600s it was on the edge of the water 鈥 that's how much land reclamation has happened since. The name, aptly, means 'protection from the waves'. Today it's patronised by local market merchants.
Giant lion masks used in the area's annual festival (held in June) flank the entrance. Also look for the dragon-shaped taps over the purification basins.