Monterey Hills is a neighborhood located in the East Harlem section of Manhattan, New York City. It is bordered by East 96th Street to the north, East 111th Street to the south, Fifth Avenue to the west, and Madison Avenue to the east. The neighborhood is known for its historic architecture and scenic views of the East River and the Manhattan skyline.

One of the main landmarks in Monterey Hills is the Thomas Jefferson Park, which is located on the east side of the neighborhood. The park features a playground, sports fields, a swimming pool, and a community center. It also serves as a popular spot for picnics and outdoor activities.

Another notable landmark in Monterey Hills is the Mount Morris Fire Watchtower, which is located in the northern part of the neighborhood. Built in 1877, it is the oldest standing fire watchtower in New York City and was used to spot fires in the surrounding area. It is now a New York City Landmark and listed on the National Register of Historic Places.

The neighborhood also features many historic brownstones and townhouses, which were built in the late 19th and early 20th centuries. These buildings are known for their ornate architectural details and are considered some of the most beautiful examples of Victorian and Edwardian architecture in the city.

The El Barrio's Artspace PS109 is another landmark in Monterey Hills, it is a former Public school that has been converted into an art space. It features galleries and artist studios, as well as a community garden and a rooftop terrace.

The neighborhood is also home to the East Harlem/El Barrio Community Plan, which is a community-based planning initiative that aims to create a sustainable and equitable community in East Harlem. The plan focuses on issues such as affordable housing, economic development, and community engagement, and has been praised for its community-driven approach to urban planning.

In conclusion, Monterey Hills is a diverse, historic, and culturally rich neighborhood located in the heart of New York City. Its landmarks and historical architecture make it unique and appreciated by the people. From the beautiful parks, fire watchtower, and art spaces to the brownstones, townhouses and community plans, Monterey Hills has a lot to offer to its residents and visitors.