Leluh is a major prehistoric and historic archaeological site, encompassing the remains of a city on Lelu Island, a satellite of the larger island of Kosrae in the Federated States of Micronesia. The remains are those of a civilization that peaked around the 14th and 15th centuries, with elements still visible at the time of European contact in the early 19th century. The rulers of Leluh gradually conquered and thus unified the island of Kosrae. From the capital at Leluh, they ruled the island with a monarchy that archaeologists believe was similar to the kingdoms of Tonga or Hawaii.