Temple IV (Tikal)
Petén, Guatemala
Pyramid-temple with a roof comb. Height: 64.6 m. Date: c. 741 CE; radiocarbon 720±60 CE.
Marks the reign of Yik'in Chan K'awiil and may be his funerary temple. It measures 64.6 m from the platform to the top of the roof comb, while Wikipedia's summary box gives 70 m.