Torreography is the geography of towers, hills and spires.
It's an observational game like i-spy.
Sometimes you can line up two points from which a third significant point is also in alignment. This is called a syzygy. This can be used to memorise how to see a very distant place of interest on the horizon, such as a building which is otherwise difficult to discern without assistance.
Such low tech observational practices were common in societies before the advent of early scientific instruments. People developed methods for surveying land based on attention and focus. Primates have evolved to exchange information on 'reading the landscape' for the purpose of planning food security.
Today we are distracted so much that techniques which require focus are now providing a therapeutic benefit to address attention deficit. This type of recreational mindfulness is suitable for a range of abilities as the game can be granulated to an infinite number of easy to difficult tasks and range of interests.