February 10, 2015Uncategorizeddiscovery, Heidelberg, History, Travel A door knob is not just a door knob when the door opens to a room at the #Heidelberg castle #travel #discovery #History Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Click to share on LinkedIn (Opens in new window) LinkedIn Click to share on WhatsApp (Opens in new window) WhatsApp Click to email a link to a friend (Opens in new window) Email Click to share on Pinterest (Opens in new window) Pinterest