The finely detailed architecture of a clock tower at the entrance attracts many photographers to Fort Christian. Named after King Christian V of Denmark, it is said to be the oldest structure in continuous use in the U.S. Virgin Islands. Construction of the fort began in 1672, when the walls were built to be between 3 and 6 feet thick with the goal of protecting the colony and the island as a whole island from hostile marauders. It has served as a jail, place of worship, and police station over the centuries. Today, the fort’s museum houses exhibits of historical artifacts. After being closed many years for renovations, the captivating landmark is once again open to visitors. It’s also a great spot from which to capture a remarkable panoramic view of the harbor.