Woolworth Building

      The Woolworth Building, at 233 Broadway, Manhattan, New York City, designed by architect  Cass Gilbert and completed in 1913, is an early US skyscraper. The original site for the building was purchased by F. W. Woolworth and his real estate agent Edward J. Hogan by April 15, 1910, from the Trenor Luther Park Estate and other owners for $1.65 million.  By January 18, 1911, Woolworth and Hogan had acquired the final site for the project,  totaling $4.5 million. More than a century after the start of its construction, 

it remains, at 241.4 meters (792 ft), one of the one-hundred tallest buildings in the  United States as well as one of the twenty tallest buildings in New York City. It has been a National Historic Landmark since 1966,and a New York City landmark since 1983.

Flatiron Building

     The Flatiron Building is located at 175 Fifth Avenue in the borough of Manhattan, New York City and is considered to be a groundbreaking skyscraper. Upon completion in 1902, it was one of the tallest buildings in the city.The building sits on a triangular island-block formed by Fifth Avenue, Broadway and East 22nd Street, with 23rd Street grazing the triangle's northern (uptown) peak. 

     As with numerous other wedge-shaped buildings, the name "Flatiron" derives from its resemblance to a cast-iron clothes iron.The building anchors the south (downtown) end of Madison Square and the north (uptown) end of the Ladies' Mile Historic District. The neighborhood around it is called the Flatiron District after its signature building, which has become an icon of New York City.

     As an icon of New York City, the Flatiron Building is a popular spot for tourist photographs, but it is also a functioning office building which is currently the headquarters of publishing companies

Rockefeller Center

     Rockefeller Center is a complex of 19 commercial buildings covering 22 acres (89,000 m2) between 48th and 51st streets in New York City, United States. Built by the Rockefeller family, it is located in the center of Midtown Manhattan, spanning the area between Fifth Avenue and Sixth Avenue. It was declared a National Historic Landmark in 1987.

      The GE Building is an Art Deco skyscraper that forms the centerpiece of Rockefeller Center in Midtown Manhattan. Known as the RCA Building until 1988, it is most famous for housing the headquarters of the television network NBC. At 850 feet (259 m) tall, the 70-story building is the 10th tallest building in New York City and the 33rd tallest in the United States. Some of the building's nicknames include The Slab and 30 Rock. The latter is derived from its address which is at 30 Rockefeller Plaza.

      The building was completed in 1933 as part of the Rockefeller Center. 

Chrysler Building

     The Chrysler Building is an Art Deco style skyscraper in New York City, located on the east side of Manhattan in the Turtle Bay area at the intersection of 42nd Street and Lexington Avenue. At 1,046 feet (319 m),the structure was the world's tallest building for 11 months before it was surpassed by the Empire State Building in 1931. It is still the tallest brick building in the world, albeit with an internal steel skeleton.
The Chrysler Building was designed by architect William Van Alen for a project of  Walter P.Chrysler.When the ground breaking occurred on September 19, 1928, there was an intense competition in New York City to build the world's tallest skyscraper.Despite a frantic pace (the building was built at an average rate of four floors per week), no workers died during the construction of this skyscraper.

     After the destruction of the World Trade Center, it was again the second-tallest building in New York City until December 2007, when the spire was raised on the 1,200-foot (365.8 m) Bank of America Tower, pushing the Chrysler Building into third position. In addition, The New York Times Building, which opened in 2007, is exactly level with the Chrysler Building in height.Both buildings were then pushed into 4th position, when the under construction One World Trade Center surpassed their height.

Statue of Liberty

     The Statue of Liberty is a colossal neoclassical sculpture on Liberty Island in New York Harbor, designed by Frédéric Bartholdi and dedicated on October 28, 1886. The statue, a gift to the United States from the people of France, is of a robed female figure representing Libertas, the Roman goddess of freedom, who bears a torch and a tabula ansata upon which is inscribed the date of the American Declaration of Independence, July 4, 1776. A broken chain lies at her feet. The statue is an icon of freedom and of the United States: a welcoming signal to immigrants arriving from abroad. Sculptor Frederic Bartholdi was inspired by the sheer scale of the Suez Canal and a massive lighthouse that drew boats inward. Bartholdi designed the statue to resemble the Roman goddess of Liberty, in majestic, flowing robes. The statue's stern face was modeled after Bartholdi's mother who he was close with.

     The statue is situated in Upper New York Bay on Liberty Island, south of Ellis Island. Both islands were ceded by New York to the federal government in 1800. As agreed in an 1834 compact between New York and New Jersey that set the state border at the bay's midpoint, the original islands remain New York territory despite their location on the New Jersey side of the state line.

The Empire State Building

The Empire State Building is a 102-story skyscraper located in Midtown Manhattan, New York City, at the intersection of Fifth Avenue and West 34th Street. It has a roof height of 1,250 feet (381 meters), and with its antenna spire included, it stands a total of 1,454 ft (443.2 m) high. Its name is derived from the nickname 

for New York, the Empire State. It stood as the world's tallest building for 40 years, from its completion in 1931 until construction of the World Trade Center's North Tower was completed in 1972. Following the September 11 attacks in 2001, the Empire State Building was again the tallest building in New York.

The Empire State Building is currently the third-tallest completed skyscraper in the United States (after the Willis Tower and Trump International Hotel and Tower, both in Chicago), and the 22nd-tallest in the world (the tallest now is Burj Khalifa,located in Dubai).

The Empire State Building was designed by William F. Lamb from the architectural firm Shreve, Lamb and Harmon, which produced the building drawings in just two weeks, using its earlier designs for the Reynolds Building in Winston-Salem, North Carolina, and the Carew Tower in Cincinnati, Ohio.The construction was part of an intense competition in New York for the title of  "world's tallest building". Two other projects fighting for the title, 40 Wall Street and the Chrysler Building, were still under construction when work began on the Empire State Building. Each held the title for less than a year, as the Empire State Building surpassed them upon its completion, just 410 days after construction commenced. The project was completed ahead of schedule and under budget. Instead of taking 18 months as anticipated, the construction took just under fifteen.

The Empire State Building has one of the most popular outdoor observatories in the world, having been visited by over 110 million people. The 86th-floor observation deck offers impressive 360-degree views of the city. There is a second observation deck on the 102nd floor that is open to the public. It was closed in 1999, but reopened in November 2005.