Jericho is a biblical walled city mentioned in the Book of Joshua. It is located near the Jordan River in the West Bank and is believed to be one of the oldest continuously inhabited cities in the world. It is known for its walls, which were destroyed by the Israelites during their conquest of Canaan. The city is also known for its religious significance, as it is mentioned in the Bible as the first city conquered by the Israelites after they crossed the Jordan River.