King David's Tower

The Tower of David is an ancient citadel located near the Jaffa Gate entrance to the Old City of Jerusalem.
Built to strengthen a strategically weak point in the Old City's defenses, the citadel that stands today was constructed during the 2nd century BCE and subsequently destroyed and rebuilt by, in succession, the Christian, Muslim, Mamluk, and Ottoman conquerors of Jerusalem. It contains important archaeological finds dating back 2,700 years, and is a popular venue for benefit events, craft shows, concerts, and sound-and-light performances.
The name "Tower of David" is due to Byzantine Christians who believed the site to be the palace of King David.