There are a number of well placed green spaces which have been preserved in Port of Spain. Many of them are referred to as squares or parks. Although some of the Squares have retained some of their "original framework" which consists of lengths of metal placed in concrete, which surround the exterior of the space, with each Square having at least four gates. These gates are positioned on the corners so as to allow the main paths of the Square to form an X. Some of the Squares have not retained nor do they give the appearance of having had the lengths of metal placed on its exterior points as lines of demarcation. By virtue of the gates to the Squares not being closed at any time and the lack of metal enclosures on others, there is the impression that these Squares and places are also open to the public at all hours. In some of the Squares, there are street lights to illuminate the interior of the square at nighttime.