Fifty-five years ago today, Don Juan Carlos of Spain married Princess Sophia of Greece and Denmark in Athens. The Greek princess (who changed the spelling of her name to the Spanish Sofia) wore a family heirloom, the Prussian Tiara, to wed the future Spanish king in two ceremonies (one Roman Catholic, one Greek Orthodox). Here’s a look at snippets from their wedding day!

Sofia and her father, King Paul of the Hellenes, leave for the wedding

Sofia arrives for the Roman Catholic wedding ceremony

Juan Carlos and Sofia kneel during the Catholic ceremony

The couple processes out of the cathedral after the Catholic ceremony

Sofia arrives for the Orthodox ceremony

Juan Carlos bows and Sofia curtseys during the ceremony

King Paul exchanges the wedding crowns, which were also used at his own royal wedding

Another angle showing King Paul holding the crowns

The bride and groom wave to the gathered crowd

Sofia waves as the carriage processes through Athens