Cathedral Church of St. John the Divine

The One World Trade Center skyscraper rises 1,776 feet above the street and is the tallest building in the United States (and for that matter, the Western Hemisphere). Despite its colossal size, its simple design allows it to blend remarkably well into the Lower Manhattan skyline. An observation deck on the top floors offers 360-degree views of the city.

Located on four acres overlooking the Hudson River in Fort Tryon Park, the building incorporates elements from five medieval French cloisters – quadrangles enclosed by a roofed or vaulted passageway, or arcade – and from other monastic sites in southern France. There are various artworks on display in the museum, with the Unicorn Tapestries being the most famous.

Sitting on Vista Rock, one of the highest points in the park, the castle provides excellent views of Central Park, particularly to the north. It is a popular spot for photography and contains a visitor center and a nature conservatory. Just below the castle to the north is Turtle Pond, a small, swamp-like pond holding various fish, frogs, insects, and birds.

A children's museum home to exhibits featuring Adventures with Dora & Diego.

Dates back to 1680, and held an abortive peace conference during the Revolutionary War.

On the site of the former World Trade Center towers, the memorial consists of two enormous waterfalls and reflecting pools set within the footprints of the twin towers, lined with bronze panels with the names of the nearly 3,000 victims of that fateful day inscribed. The surrounding plaza holds a grove of trees. The museum, which sits underground right next to the memorial, contains exhibits which explain the events of 9/11 and their aftermath, with remnants of the original towers and artifacts from that day. If you see a white rose on one of the names, it's because today is that victim's birthday.

Inwood Hill Park contains the last tracts of virgin forest in Manhattan. Many arrowheads and other artifacts of the former Native American occupants of Manhattan Island have been found in this park.

One of Brooklyn's most prized brownstone neighborhoods. It is predominantly residential, characterized by late 19th- and early 20th-century rowhouses with architectural significance. Street signs in the Historic District are brown rather than green.

With New York City growing and not enough space in the City Hall building, this 40-story structure was built to meet the space demands of the city government. Completed in 1915, it is a massive and very grand building with the gilded statue of a woman standing atop the building's spire.

The interior of this Episcopal church is a peaceful place, and both the exterior and interior are architecturally harmonious and worth looking at if you are walking nearby.

A picturesque brick building that actually predates the park. It was built in 1851 to serve as a munitions supply depot for the New York State National Guard, and was designed to look like a medieval fortress, with battlements overlooking the area. Today the building holds a refreshment stand and a small art gallery with rotating/seasonal exhibits.

The original subway station, and quite a marvel to witness--the chandeliers and ornate tiling are a sharp contrast to the nearby Brooklyn Bridge-City Hall station. There's one catch, though: it's been closed since 1945. However, you can see it by staying on the downtown 6 train after its last stop Brooklyn Bridge-City Hall; it will turn around in the old station. This is the one place in the system where this is allowed, and the announcements reflect that. The Transit Museum (in Downtown Brooklyn) offers occasional tours as well, which allow you to actually walk around the station, but you must be a museum member and a US citizen, making this an impractical choice for most visitors.

Holding a remarkably large collection, each of the 5 floors of this massive building has expansive and well-designed exhibits devoted to astronomy, biology, geology, anthropology, climatology, and paleontology. You will want to allow a full day if you hope to see the entirety of the museum. Some of the highlights are the Rose Center for Earth and Space on the northeast corner of the building, which contains a seven-story glass cube holding the Hayden Planetarium, a huge sphere suspended above the exhibit halls below and holding a "cosmic pathway" exhibit; the numerous habitat diorama halls on the first, second and third floors, with recreations of African, Asian, North American, and ocean plants and animals, including a full-size model of a Blue Whale suspended above the Ocean Life Hall; a Hall of Minerals and Gems, which contains many rare and beautiful specimens, including the largest star sapphire in the world and a chunk of a massive meteorite; extensive anthropology halls on the first, second, and third floors, with exhibits devoted to people of Asia, Africa, Central America, the Pacific, and Native Americans; and the natural history halls on the fourth floor, with one of the largest collections of dinosaur skeletons in the world.

At the southern tip of Manhattan, Battery Park is a waterfront green space, named for the artillery batteries which were installed here to protect the settlement of New York when it was under Dutch, then British rule. In the lead-up to the War of 1812, 40.70343-74.0168214 Castle Clinton was constructed as a fort to protect the city, and is now operated as a small museum. There are several memorials in the park, including 40.70387-74.0172715 The Sphere, a public art piece originally housed on the World Trade Center site which survived the events of September 11 and was moved to Battery Park. Ferries departing to the Statue of Liberty and Ellis Island (see below) depart from here.

The historic heart of the Financial District and the home of the New York Stock Exchange, Wall Street is a metonym for American big business, stock trading and the entire financial industry, although most New York financial firms are no longer headquartered on the street itself, but housed nearby in new offices, and some have moved to Jersey City. A narrow street running downhill from Broadway to the East River, Wall Street was named for the wall that was built here in 1652 to keep Manhattan's indigenous peoples out of the growing Dutch settlement. The wall was demolished by the British in 1699. By the late 18th century, traders and speculators would gather under a buttonwood tree at the foot of Wall Street to trade informally - this was the origin of the New York Stock Exchange that was established in 1817.