It's the"Larabanga mosque," a historic structure on the list of World Monuments we should preserve. As the World Monuments Fund website says:

A conservation effort of the 1970s was not as effective as had been hoped and ultimately moisture was trapped within the building’s earthen walls and wooden support beams. This weakened the structure, causing timber to rot; termite infestation added to the problems. Damage from wind and rain hastened the collapse of the mosque’s minaret. The monument was on the 2002 Watch, which provided an opportunity for WMF to sponsor an effort to remove inappropriately applied cement from the building’s walls and replace it with a traditional mud-based plaster.

Did anyone do anything write in the 70s? Anything?