commemorable; worth commemorating; momentous; monumental
commemorative photograph; souvenir photograph
taking a commemorative photo
commemorative plaque (usu. on a stone); stone monument (bearing an inscription)
museum (esp. in memory of a person or event); memorial hall
① 記念とするもの。② 貝塚、古墳、都城跡、城跡、旧宅その他の遺跡で日本にとつて歴史上又は学術上価値の高いもの、庭園、橋梁、峡谷、海浜、山岳その他の名勝地で日本にとつて芸術上又は観賞上価値の高いもの並びに動物（生息地、繁殖地及び渡来地を含む）、植物（自生地を含む）及び地質鉱物（特異な自然の現象の生じている土地を含む）で日本にとつて学術上価値の高いもの（文化財保護法第2条第2項第4号）
taking the entrance examination for a school without regard for one's chances of passing
memorial lecture; commemorative speech
commemorative stamp; cachet
National Foundation Day (national holiday; February 11)
collection of essays contributed in celebration of something; festschrift
commemorative publication
commemorative publication
Nobel Memorial Prize in Economic Sciences
commemorative coin; memorial coin