ancient · adjective /ˈeɪn.tʃənt/
ancient
B1 from a long time ago
Dictionary examples:
ancient Greece/Rome/Egypt
ancient monuments/ruins
People have lived in this valley since ancient times.
Learner example:
I would recommend you to visit Rome, because you shouldn't miss [seeing] the huge monuments, the ancient Roman ruins and the Vatican. (Preliminary English Test; B1; Italian)