The House of Allegiance (also known as Bait al-Mulla) is one of the most important landmarks in the city of Al-Ahsa, where it witnessed the most prominent and greatest events before and during the period of unification of the Kingdom of Saudi Arabia. The House of Allegiance is located in the Al-Kut neighborhood of Hofuf in the Al-Ahsa region and has an area of about 705 square metres. It was founded by Sheikh Abdul Rahman bin Amr bin Muhammad bin Omar Al Mulla, who is the judge of Al-Ahsa in 1203 AH. The House of Allegiance displays many documents that contain the history of Al-Ahsa and document its people's pledge of allegiance to the king. It is considered an archaeological landmark that reflects the ancient architectural style in that region. It is a destination for many tourists.