What is the function of a Tholos in Greek architecture?

A Tholos in Greek architecture is primarily recognized as a circular building that often served as a shrine or a space for ceremonial purposes. Typically, these structures feature a domed or circular design, which distinguishes them from other architectural forms. A famous example is the Tholos of Delphi, which served as a sanctuary for the god Apollo and played a significant role in Greek religious life. This architectural form was significant in ancient Greek culture, providing a space for worship or veneration, thus embodying its function as a shrine.

In contrast, the other options represent different types of structures or functions within Greek society. Marketplaces, or agoras, served as public gathering spaces for trade and social interaction, while public theaters were designed for performances and gatherings, showcasing the cultural aspects of Greek life. Residential units were private homes, differing fundamentally in purpose from religious or communal structures like a Tholos.