Why does restoration sometimes uncover older remains?
Work can reveal earlier layers concealed beneath or behind later structures. Archaeological findings need documented interpretation, rather than assumptions based on appearance.

Related questions
What is the difference between restoration and recreation?
Restoration works with an existing historic structure; recreation produces a new interpretation. Ask which elements survive and which were added during later work.
What do old tile fragments tell us about a hamam?
They can help explain its decoration and construction history. A surviving fragment is evidence; a complete modern display may also contain reconstruction.
Is a cistern under a hamam the same as a bathing pool?
No. A cistern stores water; it is not automatically a pool where visitors bathed. Its purpose and date need to be established for that particular site.