A garden is a place where gardening takes place. This activity is often called gardening. It involves growing and cultivating plants, therefore it is horticulture, which unlike agriculture, mass production of food crops is not necessarily done in a garden, like it is on farms. Gardening is more of an art, and they are usually used to decorate one's property, such as a person's backyard.
There was a garden on the roof of the clothing shop in Miami. Robin went to this shop and took the elevator to the roof to this garden, so that he could check the temperature at that altitude.