Hello! I recently got a bookmark from my Grandma, and she said she got it when she went to Seoul in the 90s. I am curious to know what architectural structure is in the bookmark, and can anybody help me translate the characters at the back? I was trying to trace this on google but cannot seem to find an accurate result. Thanks so much!

Link of the images: https://imgur.com/a/wa56GTY

https://imgur.com/a/FR4LsQc