There are known knowns when Carol and I travel, and there are known unknowns. There are also, I suppose, unknown knowns, although I’m not precisely sure what such things might be. But my favorite attractions in traveling are the unknown unknowns. Unknown unknowns are what former Secretary of Defense Donald Rumsfeld identified when explaining why his and Cheney’s Iraq War was not the cakewalk they’d promised it would be. For me, unknown unknowns are the unique and worthwhile experiences a given destination might offer had I taken the time to consult a travel guide before arriving. Sometimes unknown unknowns turn out to be significant, such as arriving at Big Ben in London to find it fully ensconced in scaffolding, or discovering the Winston Churchill’s War Room and Downton Abbey’s real life Highclere Castle sell out well in advance of the day you had planned to attend. Then there are the unknown unknowns that turn out to be completely unexpected, but wholly enjoyable surprises. It’s for these, that I maintain a steadfast reluctance to plan ahead or try to learn anything much about where I’m going until I get there.