National Committee on American Foreign Policy

St. Bartholomew's Church, commonly called St. Bart's, is a historic Episcopal parish founded in January 1835, and located on the east side of Park Avenue between 50th and 51st Street in Midtown Manhattan, in New York City. In 2018, the church celebrated the centennial of its first service in its Park Avenue home.In 2020, it reported 2,196 members, average attendance of 386, and $2,791,353 in plate and pledge income. On October 31, 2016, the St. Bartholomew's Church and Community House complex was designated a National Historic Landmark, for its significance as an important example of early 20th-century ecclesiastical architecture designed by Bertram Goodhue.

Chateau Moderne was a Manhattan night club which was popular in the 1930s. It was located in a no longer extant building at 42 East 50th Street, between 5th and Madison Avenues. The establishment entered a not guilty plea to income tax evasion in Manhattan United States Federal Court on July 19, 1939.In 1935 Chateau Moderne was renovated with the bar being moved forward to provide room for a sensational stage show. It reopened on September 14, 1935. Singer Nora Lee King, a Decca Records recording artist, entertained at the night club in November 1941.Matchbook

350 Park Avenue is a planned supertall office tower in Midtown Manhattan, New York City, designed by Foster + Partners and to be developed by Vornado Realty Trust and Rudin Management. The proposed 62-story, approximately 1,600-foot-tall (490 m) structure is planned to be occupied by anchor tenant Citadel LLC, with the hedge fund company working closely with the developer and architecture firm in the design of the tower. 350 Park Avenue is proposed to contain 1,800,000 square feet (170,000 m2) of commercial office space, of which Citadel is to occupy approximately 850,000 square feet (79,000 m2). The proposal also includes the construction of a 12,500-square-foot public concourse fronting onto Park Avenue and a contribution of over $35.8 million for the city's East Midtown Public Realm Improvement Fund, as part of its public-private agreement in conjunction with the City of New York.

Lotte New York Palace Hotel is a luxury hotel in the Midtown Manhattan neighborhood of New York City, at the corner of 50th Street and Madison Avenue. It was originally developed between 1977 and 1980 by Harry Helmsley. The hotel consists of a portion of the Villard Houses, built in the 1880s by McKim, Mead & White, which are New York City designated landmarks and listed on the National Register of Historic Places. It also includes a 51-story skyscraper designed by Emery Roth & Sons and completed in 1980. The Villard Houses, arranged in a U-shaped plan, consist of three wings surrounding a central courtyard on the east side of Madison Avenue. The houses' center wing serves as a lobby, while the south wing serves as an event space. Behind the Villard Houses to the east is the modern skyscraper addition. As of 2021, the hotel has 909 rooms and suites. The top floors of the skyscraper are known as the Towers, which consist of 176 luxury units. Among the units in the Towers are four ornate triplex suites, each with their own decorations, as well as four other specialty suites. The Helmsley Palace Hotel opened in 1981 and was operated by Helmsley until 1992. As part of a bankruptcy proceeding, it was sold in 1993 to the Sultan of Brunei, who completely renovated the hotel and Villard Houses. The government of Brunei took over the hotel from the royal family in the late 2000s. Northwood Investors, an American real estate investment firm, bought the hotel from the government of Brunei in 2011 and renovated it. The hotel was sold again in 2015 to Korean luxury hotel operator Lotte Hotels & Resorts, which renamed it the Lotte New York Palace Hotel.

The Waldorf Astoria New York is a luxury hotel in Midtown Manhattan in New York City. The structure, at 301 Park Avenue between 49th and 50th Streets, is a 47-story 625 ft (191 m) Art Deco landmark designed by architects Schultze and Weaver, which was completed in 1931. The building was the world's tallest hotel from 1931 until 1963 when it was surpassed by Moscow's Hotel Ukraina by 23 feet (7.0 m). An icon of glamour and luxury, the current Waldorf Astoria is one of the world's most prestigious and best-known hotels. Waldorf Astoria Hotels & Resorts is a division of Hilton Hotels, and a portfolio of high-end properties around the world now operates under the name, including in New York City. Both the exterior and the interior of the Waldorf Astoria are designated by the New York City Landmarks Preservation Commission as official landmarks. The original Waldorf–Astoria was built in two stages along Fifth Avenue and opened in 1893; it was demolished in 1929 to make way for the construction of the Empire State Building. Particularly after its relocation, the Waldorf Astoria gained international renown for its lavish dinner parties and galas, often at the center of political and business conferences and fundraising schemes involving the rich and famous. After World War II, it played a significant role in world politics and the Cold War, culminating in the controversial World Peace Conference of March 1949. Conrad Hilton acquired management rights to the hotel on October 12, 1949, and the Hilton Hotels Corporation finally bought the hotel outright in 1972. It underwent a $150 million renovation ($493 million in 2021 dollars ) by Lee Jablin in the 1980s and early 1990s. The Anbang Insurance Group of China (now Dajia Insurance Group) purchased the Waldorf Astoria New York for US$1.95 billion in 2014, making it the most expensive hotel ever sold. The Waldorf was closed in 2017 and its upper-floor hotel rooms were converted into 375 condominiums called The Towers of the Waldorf Astoria. The renovated structure will retain 375 hotel rooms on the lowest 18 floors and is expected to reopen by early 2023. The Waldorf Astoria and Towers has a total of 1,413 hotel rooms as of 2014. In 2009, when it had 1,416 rooms, the main hotel had 1,235 single and double rooms and 208 mini-suites, while the Waldorf Towers, from the 28th floor up to the 42nd, had 181 rooms, of which 115 were suites, with one to four bedrooms. Several of the luxury suites are named after celebrities who lived or stayed in them such as the Cole Porter Suite, the Royal Suite, named after the Duke and Duchess of Windsor, the MacArthur Suite, and the Churchill Suite. The most expensive room, the Presidential Suite, is designed with Georgian-style furniture to emulate that of the White House. It was the residence of Herbert Hoover from his retirement for over 30 years, and Frank Sinatra kept a suite at the Waldorf from 1979 until 1988. The hotel has three main restaurants: Peacock Alley, The Bull, and Bear Steak House, and La Chine—a new Chinese restaurant that replaced Oscar's Brasserie in late 2015. Sir Harry's Bar, also located in the hotel, is named after British explorer Sir Harry Johnston.

Track 61 is a storage track abutting a private railroad platform on the Metro-North Railroad in Manhattan, New York City. It is located beneath the Waldorf Astoria New York hotel, within an underground storage yard northeast of Grand Central Terminal. The platform is part of the Grand Central Terminal complex.

Summer Streets is an annual event organized during the month of August in the streets of New York City since 2008. During the mornings of the first three Saturdays in August, 20 miles (32.2 km) of streets are closed to traffic for walkers, runners and cyclists, including Park Avenue and Lafayette Street in Manhattan between 109th Street and Brooklyn Bridge. The event attracted 300,000 people in 2022.

The Carnegie Corporation of New York is a philanthropic fund established by Andrew Carnegie in 1911 to support education programs across the United States, and later the world. Carnegie Corporation has endowed or otherwise helped to establish institutions that include the United States National Research Council, what was then the Russian Research Center at Harvard University (now known as the Davis Center for Russian and Eurasian Studies), the Carnegie libraries and the Children's Television Workshop. It also for many years generously funded Carnegie's other philanthropic organizations, the Carnegie Endowment for International Peace (CEIP), the Carnegie Foundation for the Advancement of Teaching (CFAT), and the Carnegie Institution for Science (CIS). According to the OECD, Carnegie Corporation of New York’s financing for 2019 development increased by 27% to US$24 million.

The Mrs. O. H. P. Belmont House was a mansion located at 477 Madison Avenue on the northeast corner of 51st Street in Midtown Manhattan, New York City, New York, United States. The building was demolished in 1951.

Park Avenue Plaza is an office building in the New York City borough of Manhattan, occupying the block bounded by 52nd Street, 53rd Street, Park Avenue and Madison Avenue, adjacent to the Racquet and Tennis Club building. Park Avenue Plaza was designed by the architecture firm of Skidmore, Owings & Merrill, and was constructed from 1979 to 1981. The building stands at 574 feet (175 m), with 44 floors above ground, and has over one million square feet of space available. As of 2018, ownership of the building is divided between Fisher Brothers and Chinese real estate magnate Zhang Xin's SOHO China.

The Racquet and Tennis Club, familiarly known as the R&T, is a private social and athletic club at 370 Park Avenue, between East 52nd and 53rd Streets in Midtown Manhattan, New York City.

The Villard Houses are a set of former residences comprising a historic landmark at 451–457 Madison Avenue between 50th and 51st Streets in the Midtown Manhattan neighborhood of New York City. Designed by the architect Joseph Morrill Wells of McKim, Mead & White in the Renaissance Revival style, the residences were erected in 1884 for railroad magnate Henry Villard. They comprise a portion of the Lotte New York Palace Hotel, the main tower of which is to the east. The building comprises six separate residences in a "U"-shaped plan, with wings to the north, east, and south surrounding a courtyard on Madison Avenue. The facade is made of Belleville sandstone, and each house consists of a raised basement, three stories, and an attic. Among the artists who worked on the interiors were artist John La Farge, sculptor Augustus Saint-Gaudens, and painter Maitland Armstrong. Some of the more elaborate spaces, such as the Gold Room, dining room, and reception area in the south wing of the complex, still exist as part of the New York Palace Hotel. The houses were commissioned by Henry Villard, president of the Northern Pacific Railway, shortly before he fell into bankruptcy. Ownership of the residences changed many times through the mid-20th century. By the late 1940s, the Roman Catholic Archdiocese of New York had acquired all of the houses, except the northernmost residence at 457 Madison Avenue, which it acquired from Random House in 1971. The New York City Landmarks Preservation Commission designated the complex an official landmark in 1968, and the residences were listed on the National Register of Historic Places in 1975. As part of the construction of the New York Palace Hotel, completed in 1980, the north wing was turned into office space for city preservation group Municipal Art Society.