Translation of lock in Spanish

This site was one of the country's most famous places as Tomb Rider with Angelina Jolie was filmed there. It was built like a pyramid with many stairs and little towers. The place was called Angkor Thom.
Once at the top we asked ourselves what this was all about. The site from the top was beautiful but it lacked atmosphere and the sunset was not that spectacular at all in our opinion.
I guess it is a very interesting book, but I did not entirely understand it. What did the author try to say, what message did he want to deliver? Do you want that I recommend another book?