The Keyhole of the Knights of Malta is a famous viewing point located on the island of Malta, specifically in the gardens of the Knights of St. John. This unique keyhole-shaped opening in a door allows visitors to glimpse a stunning view of the St. Peter and Paul Church and the surrounding gardens. It is a popular spot for tourists due to its picturesque scenery. The keyhole is part of the Auberge de Castille, which served as the residence for the Knights of Malta. The design reflects the architectural style of the time and offers a glimpse into the history of the Knights of Malta, who played a significant role in the island's past.