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
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
commemorative coin; memorial coin
Nobel Memorial Prize in Economic Sciences