Out of sight out of mind

Out of sight out of mind -The idea that something is easily forgotten or dismissed as unimportant if it is not in our direct view.

Origin

The use of 'in mind' for 'remembered' and 'out of mind' for 'forgotten' date back to the at least the 13th century. The earliest printed citation of a link with memory and the sight of something is in John Heywood's Woorkes. A dialogue conteynyng prouerbes and epigrammes, 1562, as reprinted by the Spenser Society, 1867:

Example

 

The photo on the left is of the old pub, when people walk past it they don't really notice the features on the building. They don't really see the features even if they walk past it everyday. The photo on the right is one of the features that are on the building that are not really noticed everyday but when they are noticed people start to pay attention to them. so to get them noticed you can make them standout.