In recent years, urban planners and designers look at public art - the art that exists in public domain - as an opportunity for creating vibrant and meaningful environments in many big and small cities in all over the world. Although public art as an integrated art in urban spaces that happens in streets, urban parks, public buildings, house estates and anywhere people live, work and take their leisure is not a new concept, urban planners and designers and everyone who makes policies for cities should consider it as a powerful item in city that can cause gradation in urban physical, social, behavioral, economical and cultural context. Also we should consider that public art depends on a certain interaction with the public, based on some shared postulates. This article tries to clarify the definitions, limitations and boundaries of public art and its influences on public space.
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