One thing to consider is that a wall can be painted, but various forms encompass art, such as buildings and monuments.
Famous landmarks, designed by architects and artists, have not only produced masterpieces but also concealed secret Easter eggs within them.
These surprises were possibly incorporated as a playful means to keep the public in suspense, or perhaps they were intentionally meant for us to discover.
The following are the most renowned landmarks and the hidden surprises concealed within, which were previously unknown to you.
The Sphinx and its secret chambers
In the middle of the desert, a gigantic monument is situated, concealing an unknown secret.
Within it, multiple elaborate chambers and tunnels are found on the side of the Sphinx, leading down to the base of the structure.