In 434 BCE, the Kingdom of Judah tried to form an alliance with Egypt. The Jews thought, despite Jeremiah's prophecies, that this would keep them safe. But instead, the Babylonian king, Nebuchadnezzar, marched on Judah. He pillaged Jerusalem and deported tens of thousands of Jews to his capital in Babylon; all the deportees were drawn from the upper classes, the wealthy, and craftsmen. Ordinary people were allowed to stay in Judah, and Nebuchadnezzar appointed a puppet king over Judah, Zedekiah. But Zedekiah, though G‑d fearing and righteous, was foolishly courageous, and (despite Jeremiah's repeated admonitions not to) he tried to break free from the Babylonians. So Nebuchadnezzar marched on Jerusalem again. This time he would not be content with making Judah into a vassal state. On the tenth of Tevet, 425 BCE, Nebuchadnezzar began the siege of Jerusalem.http://www.chabad.org/library/article_cdo/aid/144569/jewish/The-First-Temple.htm

Thirty months later, in the month of Tammuz, after a long siege during which hunger and epidemics ravaged the city, the city walls were breached. King Zedekiah tried to escape through an eighteen-mile long tunnel, but he was captured in the plains of Jericho by enemy soldiers who, while chasing a deer, saw him emerging. He was brought before Nebuchadnezzar in Riblah. There Zedekiah's sons and many other Jewish personages were slain before his eyes; then his eyes were put out, and he was led in chains to Babylon. On the seventh day of Av, the chief of Nebuchadnezzar's army, Nebuzaradan, began the destruction of Jerusalem. The walls of the city were torn down, and the royal palace and other structures in the city were set on fire. Our Sages say that when Nebuzaradan entered the Temple he found the blood of Zechariah seething. He asked the Jews what this phenomenon meant, and they attempted to conceal the scandal, but he threatened to comb their flesh with iron combs. So they told him the truth: "There was a prophet among us who chastised us, and we killed him. For many years now his blood has not rested." Nebuzaradan said, "I will appease him." He then killed the members of the Great and Small Sanhedrins, then he killed youths and maidens, and then school-children. Altogether, he killed 940,000 people. Still the blood continued to boil, whereupon Nebuzaradan cried: "Zechariah, Zechariah! I have slain the best of them; do you want all of them destroyed?" At last the blood sank into the ground (Talmud, Gittin 57b).1 On the ninth day of Av, toward evening, the Holy Temple was set on fire and destroyed. The fire burned for 24 hours. Our Sages taught: When the first Holy Temple was destroyed, groups of young priests gathered with the keys to the Sanctuary in their hands. They ascended the roof and declared: "Master of the World! Since we have not merited to be trustworthy custodians, let the keys be given back to You." They then threw the keys toward Heaven. A hand emerged and received them, and the priests threw themselves into the fire (Talmud, Ta'anit 29b). Everything of gold and silver that still remained was carried off as loot by the Babylonian soldiers. All the beautiful works of art with which King Solomon had once decorated and ornamented the holy edifice were destroyed or taken away. The holy vessels of the Temple that could be found were brought to Babylon. The high priest Seraiah and many other high officials and priests were executed. In addition to the 940,000 people killed in the aforementioned incident, millions more were killed inside and outside of the city. Many thousands of the people that had escaped the sword were taken prisoner and led into captivity in Babylon, where some of their best had already preceded them. Only the poorest of the residents of Jerusalem were permitted to stay on to plant the vineyards and work in the fields. All this had been predicted in the Torah, and it came to pass with all the horror of which Moses had warned. Thus ended the empire of David and Solomon; thus the magnificent city and Holy Temple were destroyed. Thus G‑d punished His people for deserting Him and His laws.http://www.chabad.org/library/article_cdo/aid/144569/jewish/The-First-Temple.htm

In 19 B.C. the master-builder, King Herod the Great, began the most ambitious building project of his life—the rebuilding of the Temple and the Temple Mount in lavish style. To facilitate this, he undertook a further expansion of the Hasmonean Temple Mount by extending it on three sides, to the north, west and south. Today’s Temple Mount boundaries still reflect this enlargement.[[http://www.biblicalarchaeology.org/daily/biblical-sites-places/temple-at-jerusalem/the-temple-mount-in-the-herodian-period/|biblicalarchaeology.org]]

King Solomon built the First Temple on the top of Mount Moriah which is visible in the center of this drawing. This mountain top can be seen today, inside the Islamic Dome of the Rock. King Hezekiah built a square Temple Mount (yellow walls) around the site of the Temple, which he also renewed. In the Hasmonean period, the square Temple Mount was enlarged to the south (red walls). Finally, King Herod the Great enlarged the mount to double its size (grey walls) by building 15 feet-thick retaining walls, which are still standing today. The many cisterns cut into the mountain are also shown.[[http://www.biblicalarchaeology.org/daily/biblical-sites-places/temple-at-jerusalem/the-temple-mount-in-the-herodian-period/|biblicalarchaeology.org]]

Once the platform was completed, double colonnades, or porticoes, were built above the outer walls to provide shelter from the elements. A huge hall called the Royal Stoa, with four rows of columns, was erected on the southern end. The pre-existing eastern portico that stood on the square mount was left unchanged. As it belonged to a pre-Herodian period, it was called Solomon’s Porch. Near the center of this platform a new gold-covered Temple was constructed that in turn was surrounded by many other buildings. In 70 A.D., this splendid structure that had taken 46 years to build (John 2.20) was destroyed by the Romans. The only vestiges of the compound to survive the destruction were the four retaining walls that supported the Temple platform; the best known today is the Western Wall.[[http://www.biblicalarchaeology.org/daily/biblical-sites-places/temple-at-jerusalem/the-temple-mount-in-the-herodian-period/|biblicalarchaeology.org]]