From Carl's Guide:
The Great Sphinx
This is my favored way of removing the curse. Shortly after being cursed, if you have no other opportunities in Egypt, you'll get an adventure called Cursed!. While you don't have to do the adventure to gain entry to the Sphinx, you can turn it into a nice way to earn some extra VISA points. Not only are you treated to an impressive visual display by the Great Sphinx, you'll also unlock a good place to come back and collect tons of gems later.
My bolds. This is what I'm referring to. Thanks for trying to help, Pam.
Edit: Now that I've played this part, I can share that the Cursed opportunity came by phone call, and unfortunately arrived just as I was approaching the soulpiece statue, which was too late for achieving that particular opportunity, as it required "pleading" to the Great Sphinx before entering. However it'll be a nice tomb to come back to for loot each visit.