This elevated railway turned public park provides fantastic views of the Hudson River and New York City skyline on Manhattan's West Side. The 1.5-mile High Line draws travelers to its lush horticulture, art installations and community programs. Here, you can have a leisure stroll along the structure and admire colorful murals and installations all around. Other must-sees of the area include the Chelsea Market, the Whitney Museum of American Art and the Vessel. Hear the story behind this unique greenway on a free tour led by knowledgeable guides which takes place on some days. – Tripadvisor