"After the Utah desert, California, Romania, Wright Island, and Belgium, a strange metal pole has appeared in Hungary as well, at the border of the 15th and 16th districts in a field mostly used as a dog run. The famous Hungarian meme face, András Arató, better known as ‘Hide the Pain Harold’, also took photos with the column."
https://hungarytoday.hu/strange-monolith-column-metal-pole-budapest-hungary/
This guy might be on to it. Explains 2001, which was done as a cover for the Apollo program, which was all fake, but he couldn't tell anyone, so he hid it in the theme of the movie. https://www.youtube.com/watch?v=MSo6s_xrj4c&feature=emb_logo