In 586 BCE, after a prolonged siege and a rebellion by Judah's king Zedekiah against Babylonian rule, the forces of Nebuchadnezzar II breached Jerusalem, and the biblical account in 2 Kings 25 describes his commander Nebuzaradan burning the Temple along with the royal palace and the houses of the city, carrying its remaining bronze, gold and silver vessels to Babylon.
The destruction marks the beginning of the Babylonian Exile, the deportation of Judah's political and religious leadership, an event that later Jewish memory treats as one of the defining catastrophes of its history, and the Temple's loss is mourned annually on the fast of Tisha B'Av alongside the later destruction of the Second Temple in 70 CE. No archaeological excavation has ever confirmed physical remains of Solomon's building.
The Temple Mount itself, sacred also to Islam as the site of the Dome of the Rock and al-Aqsa Mosque, has never been excavated by modern archaeologists, both for reasons of religious sensitivity and because the Herodian expansion that created the platform for the Second Temple in the first century BCE buried and reshaped whatever earlier remains might exist beneath it. What is known of the First Temple's construction, then, rests entirely on the biblical text itself, supplemented by comparison with excavated Iron Age temples elsewhere in the Levant, such as the roughly contemporary temple at Ain Dara in Syria, whose tripartite plan and proportions closely resemble the biblical description and have shaped how scholars read it.