Ridiculous!

I can understand losing your eyeglasses, cell phone, keys, pocketbook. Heck, I can even understand losing your child in the grocery store. But someone, please tell me how in the world you lose a lighthouse!?!?! And then to find it over 3000 miles away some 80+ years later!?! I guess if they disassembled it, then it wouldn't be as obvious as moving a house...but still, how did noone figure this out sooner? And how would you go about looking for a lighthouse anyways?