Mackay established sixty chapels during his time in Taiwan. He is recognized as a great missionary within the Presbyterian Church and admired with statues and memorial plaques. He captures the historical interest of researchers and visitors of the land.
From far Formosa (1896) by G.L. Mackay
“…early in 1872, lifting my eyes to the green-clad mountains that stand round about Tamsui, clearer than human voice every spoke to the outward ear, I heard the voice of God whisper to my listening spirit, “This is the land.”…for Formosa, the land of my labors, the native home of my wife, had been written upon my heart.” (p.330)