I've noticed something during many of my trips across Europe.
I'll pass through a small village, see an interesting monument, historic building, local landmark, or hear about a place that sounds fascinating.
I often think: "I should learn more about that later."
But by the end of the day I've forgotten the name or where exactly I saw it.
I'm curious how experienced travelers handle this.
Do you keep notes?
Save locations on a map?
Take photos as reminders?
Research everything in the evening?
Or have you found a better system?
I'd love to hear how others deal with discovering interesting places while traveling.