High city" - a hilltop setting such as that reserved for the temple complex in ancient athens associated with classical greece, including several temples to athena and other sacred sites and structures. the elevated location is associated with greater proximity to the gods who were believed to reside in the celestial realms.

"High City" is a reference to The Acropolis.

Explanation:

In this text, “High City” is a reference to The Acropolis, which comes from the Greek akron (high) and polis (city). In Classical Greece, most of the cities had their acropolis, this is, a place located at the on a high terrain (usually a mountain) where important temples were built, or where the people could be protected while being under attack.

Due to its historic and cultural relevance, The Acropolis of Athens is the most famous one and thus is usually referred to solely as The Acropolis. This “High City” is certainly home to very important temples, such as The Parthenon, which was the Temple of the goddess Athena.

According to Greek Mythology, gods lived at The Olympus, which was believed to be located at Mount Olympus, located in Thessaly, Greece. As such, it is unlikely to think that temples were built in mountains to place gods closer to celestial realms.