The New York Botanical Garden is 200 acres of cultivated gardens, natural forest,
greenhouses, and the Enid A. Haupt Conservatory (AKA The Glass Palm House).

They have an Annual Train Show in the Conservatory where model trains
operate among buildings, bridges, and tunnels made of plant material. Most
everything in these photos except the trains and glass is made of plants!

NYC has many parks within its borders. Most People know the 900 acre Central Park.
The largest is the 9000 acre Jamaica Bay National Wildlife Refuge.