Here’s one for Ripley’s Believe It Or Not book.

Up until the 1920s, couples could legally marry in Ireland just by walking towards each other, as long as they did so in Teltown, County Meath, on Saint Bridget’s Day.

If the marriage didn’t work out, they could also divorce at the same spot on the same day by walking away from each other. The custom was based on old Irish Brehon laws which allowed temporary marriage contract