Dongyong Lighthouse stands on the flank of Shiwei Mountain. Locals call it Dongyin villa. It was designated a third-grade national historic site in 1988, making it the northernmost historic site on Taiwan's territory. The lighthouse was completed in 1877, and its accompanying building, are in 18th-century English architectural style. (It was designed by an English engineer.) On the cliff below the lighthouse are two fog cannon. But now, a single foghorn fulfills their function of helping ships navigate. The white lighthouse stands atop a cliff facing the East Sea, forming a strong contrast to the deep-blue sea below the cliff.