Mrs. O. H. P. Belmont House

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.

488 Madison Avenue, also known as the Look Building, is a 25-story office building in the Midtown Manhattan neighborhood of New York City. It is along Madison Avenue's western sidewalk between 51st and 52nd Streets, near St. Patrick's Cathedral. 488 Madison Avenue was designed by Emery Roth & Sons in the International Style, and it was constructed and developed by Uris Brothers. The building was originally named for its primary tenant, the American magazine Look. The building largely contains a facade of white brick, interspersed with horizontal strips of aluminum windows. The lowest two stories contain a main entrance on Madison Avenue as well as several glass-and-metal storefronts. The three sides are connected by curved walls. The exterior includes several setbacks to comply with the 1916 Zoning Resolution. Each of the building's stories contain an average floor area of 19,500 square feet (1,810 m2), a feature intended to maximize usable office space. 488 Madison Avenue was constructed from 1948 to 1950 as a speculative real estate development, without a main tenant. By late 1949, the building was completely leased, and it was named after Look magazine, which had signed a lease for several floors. 488 Madison Avenue remained the headquarters of Look until the magazine stopped publishing in 1971, although it continued to be known as the Look Building for several years. The building has been owned by John D. and Catherine T. MacArthur Foundation and The Feil Organization since the 1970s. The Look Building was added to the National Register of Historic Places in 2005, and the New York City Landmarks Preservation Commission designated it as an official landmark in 2010.

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.

The CBS Studio Building is a seven-story office building at 49 East 52nd Street in Midtown Manhattan, New York City. It has had various uses at different times, including serving as a Vanderbilt family guest house, the first graduate school of the Juilliard School, CBS Radio studios, and Columbia Records studio. It is currently owned by the Fisher Brothers, who converted it to an office building in conjunction with construction of the 45-story Park Avenue Plaza to its east.

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.

The Omni Berkshire Place hotel is located at 21 East 52nd Street, near Madison Avenue, in Midtown Manhattan in New York City. It is owned and operated by Omni Hotels & Resorts.

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.

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

The Austrian Cultural Forum New York is one of Austria’s two cultural representation offices in the United States; the other is in Washington, D.C. It is part of the worldwide network of Austrian Cultural Forums of the Austrian Federal Ministry for European and International Affairs.

The National Committee on American Foreign Policy (NCAFP) is an American nonprofit, nonpartisan activist organization dedicated to the resolution of conflicts that threaten United States interests. Founded in 1974 by Hans Morgenthau, the organization works to identify, articulate, and advance U.S. foreign-policy interests within the framework of political realism.

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.