Get away from the concrete jungle and immerse yourself in the beauty of mother nature at the Brooklyn Botanic Garden.  Every Tuesday they offer you free admission to their gardens where your nose will be overwhelmed with delightful smells and your eyes will be bombarded with beauty and color!

The Brooklyn Museum is next door and they offer a combo ticket package in partnership with the museum, consider checking it out. 

Find more info here: http://www.bbg.org/