Emerald Bay (Feicuiwan 翡翠灣) is a forlorn stretch of sandy coastline in Wanli 萬里, a rural district of 22,000 residents situated on the rugged northeastern coast of Taiwan. It is widely known for its many derelict resorts, most famously the so-called Wanli UFO Village 萬里飛碟屋, which is what initially drew me here in 2013. I returned a year later and noticed a dilapidated structure further along the beach, an ugly institutional building similar in appearance to a Taiwanese police station of the 1980s. A closer inspection revealed an interior cluttered with intriguing clues—abandoned artifacts and decaying documents, enough to conclusively identify this neglected ruin. This was formally known as the Yeliu Signal Station 野柳信號臺, an outpost responsible for monitoring maritime traffic in the shipping lanes and designated anchorages just west of the Port of Keelung 基隆港.