The New York Botanical Garden (U.S.)
Credit: Joseph DeSciose

New York City's botanical garden, located in the Bronx, features blooming cherry trees and daffodils in spring and waterlilies and daylilies in the summer. Year-round, the Victorian-style glasshouse conservatory provides an opportunity to stroll through 11 distinct habitats from around the world,  like the Caribbean garden with its bounty of red hibiscus. An arboretum of planted firs and pine surrounds the conservatory, but the garden's oldest inhabitants are the old-growth forest at its center. Current research institutions at the garden are collecting and studying the DNA of plants and the world's 100,000 trees.