五十三次
ごじゅうさんつぎ fifty-three stations on the Tōkaidō (Edo-Kyoto highway in Edo-period Japan)
Why it means this
五十三 (fifty-three) + 次 (post stations) — the 53 relay stations of the Tōkaidō, the Edo–Kyoto highway, immortalized in Hiroshige's prints.
Breakdown
Each character links to its full entry — origin story, stroke order, and readings.