Vertebrate brain
The tectum, often called 'optic tectum', directs actions to points in space.  Its best studied function is to direct eye movements.  It also directs reaching movements.  It gets strong visual inputs, and inputs from other senses which are useful in directing actions. Sound in owls, input from the thermosensitive pit organs in snakes, scent in dogs, are examples.  In some fish, such as lampreys, it is the largest part of the brain.