The Wall of Oenoanda
Diogenes of Oenoanda was an epicurean in modern day Turkey (circa 200AD). A wealthy man, and concerned epicurean, he commissioned an inscription that expounds on Epicurus’ teachings on physics, epistemology, and ethics. It was originally about 25,000 words long and filled 260 square meters of wall space. Less than a third of it has been recovered.
Available here: https://www.english.enoanda.cat/the_inscription.html