Originally posted by: Rufio
i think it's pyramid too.
This is probably the best guess.
I don't know much about stonehenge, but I don't think it's this because I don't think it was built for "the remembered"
I doubt its a tombstone, because tombstones (in general) really have no secrets, nor do the fact that tombstones exist hold many secrets.
The pyramids were obviously built by ancient peoples. They are more or less gravesites for notable people of ancient egypt, people that would be remembered. To this day, no one has any flawless idea of how they built such big pyramids with such large stones, without the use of modern machinery. This is the "secrets" the riddle refers to.