The Great Sphinx of Giza is well-known all around the world. It's considered a wonder of the world - yet, is it still remains an unsolved mystery. They say that underneath there are more than several passages, small shafts, and accessible holes. What exactly is hidden there and why can't tourists enter it?

I bet you don’t know the secrets of these 7 famous places. Mount Rushmore hides a secret room in one of its President's heads, while the Eiffel Tower has a secret apartment hidden from everyone's eyes. Let's uncover all of these secrets and take a look at what's hidden inside the world's most famous landmarks. Learn more about your ad choices. Visit megaphone.fm/adchoices