The High Line is like a really big, cool and long playground up high in the sky, in New York City! It's built on an old train track that used to be for trains to transport things through the city, but now it's not used for that anymore.
People turned it into a really neat place where you can walk, run, and play. The High Line is about 1.45 miles long (that's a lot of walking!), and it has lots of trees, flowers, gardens, and benches to sit on. You can see all sorts of cool things along the way, like beautiful buildings and statues, and even the Hudson River.
And if you’re feeling hungry, there are lots of places to eat and drink nearby. At night, the High Line is all lit up with beautiful lights and it looks like a dreamland!
It's a really special place because you can be in the city, but you're high up enough that you feel like you're away from all the hustle and bustle of the city life. It's really fun for people of all ages to explore and enjoy!