#1 is the flooded bell tower of the Church of the Vladimir icon of the Mother of God (completed in 1783) on the Vazuza river in Tver, Russia. All of the greenery in the foreground is photoshopped in, btw.

#7 It's the interior dome of The Monument House of the Bulgarian Communist Party, also known as the Buzludzha Monument.

#4 looks like a Sandcrawler, and #13 reminds me of a landspeeder

#15 Used to be a US naval base on Adak. A sailor in my boot camp company was assigned there in 1967 (he was a j#rk. I was not displeased). Explains the population drop.

#11 Hey, kids- this guy flew to space and then fell aaaall the way down and crashed and died! Enjoy your nightmares!

#9 These might be quite a treasure. Original pressings do cost a lot on the market.