Question: What is a resort and National Historic Landmark in Palm Beach, Florida, built from 1924 to 1927 by cereal-company heiress and socialite Marjorie Merriweather Post, that has Magazines available for free to members of the resort?

Context paragraphs:
Hillwood Estate, Museum &amp; Gardens: Hillwood Estate, Museum & Gardens is a decorative arts museum in Washington, D.C., United States.  The former residence of businesswoman, socialite, philanthropist and collector Marjorie Merriweather Post, Hillwood is known for its large decorative arts collection that focuses heavily on the House of Romanov, including Fabergé eggs.  Other highlights are 18th and 19th century French art and one of the country's finest orchid collections.

Marjorie Merriweather Post: Marjorie Merriweather Post (March 15, 1887 – September 12, 1973) was a leading American socialite and the owner of General Foods, Inc.  She used much of her fortune to collect art, particularly pre-revolutionary Russian art, much of which is now on display at Hillwood, the museum that was her estate.  She is also known for building Mar-a-Lago, an estate now owned by Donald Trump.

Trump magazines: Several magazines named after Donald Trump were published between 1997 and 2009.  Trump Style, launched in February 1997, was available for free to VIP guests at Trump's hotel-casino properties, and was also available to residents of Trump's condominium buildings and members of his Mar-a-Lago club.

Upper St. Regis Lake: 742 acre Upper St. Regis Lake is a part of the St. Regis River in the Adirondacks in northern New York State.  Along with Lower St. Regis Lake and Spitfire Lake, it became famous in the late 19th century as a summer playground of America's power elite, drawn to the area by its scenic beauty and by the rustic charms of Paul Smith's Hotel.  It is the site of many grand old summer "cottages" and Great Camps, including Marjorie Merriweather Post's Topridge.  Frederick W. Vanderbilt, Anson Phelps Stokes and Whitelaw Reid were among the summer residents.  "The camps of many of these families began as tent colonies, with separate units for sleeping, dining, games, and so on, and evolved into permanent structures built with understated taste."

Benjamin A. Muncil: Benjamin A. Muncil (28 Aug 1867 – 16 Dec 1930) was an American master builder in the Adirondacks early in the 20th century.  He was a major figure in the architectural development of the Adirondack Great Camps; among his many projects was Marjorie Merriweather Post's Camp Topridge, Northbrook Lodge, and White Pine Camp, a summer White House of US President Calvin Coolidge.

Mar-a-Lago: Mar-a-Lago ( ) is a resort and National Historic Landmark in Palm Beach, Florida, built from 1924 to 1927 by cereal-company heiress and socialite Marjorie Merriweather Post.  The 126-room, 62,500-square-foot house contains the Mar-a-Lago Club, a members-only club with guest rooms, a spa, and other hotel-style amenities.  It is located

West Palm Beach Christian Convention Center: West Palm Beach Christian Convention Center (originally known as West Palm Beach Auditorium) is a 5,000-seat multi-purpose arena in West Palm Beach, Florida at the intersection of North Congress Avenue and Palm Beach Lakes Boulevard.  It was built in 1965 as the West Palm Beach Auditorium and was designed by famed architect Bertrand Goldberg.  It was home to the West Palm Beach Blaze ice hockey team, Florida Bobcats arena football team and Florida Hammerheads roller hockey team.  It hosted the twelfth WWF In Your House pay-per-view in 1996.  The Fort Lauderdale Strikers played their indoor soccer games here in the early 1980s.  It was also host to innumerable concerts from different rock acts.

Mystery on Fifth Avenue: "Mystery on Fifth Avenue" is the title of a "New York Times" article written by Penelope Green in June 2008 about a mystery apartment on Fifth Avenue in New York City.  The apartment, a 4,200-square-foot luxury co-op formerly inhabited by Marjorie Merriweather Post and E.F. Hutton, was purchased by Wall Street mogul Steven B. Klinsky and his wife Maureen Sherry for $8.5 million.  They hired architectural designer Eric Clough and his firm 212box for the renovation, during which Clough embedded an extensive mystery in the apartment in the form of riddles, ciphers, puzzles, and hidden objects, for Klinsky and Sherry's four children.  It was done without his clients' knowledge, and they did not discover the mystery until several months after moving in.

Camp Topridge: Camp Topridge is an Adirondack Great Camp bought in 1920 and substantially expanded and renovated in 1923 by Marjorie Merriweather Post, founder of General Foods and the daughter of C. W. Post.  The "camp", near Keese Mill, in the U.S. state of New York, was considered by Post to be a "rustic retreat"; it consisted of 68 buildings, including a fully staffed main lodge and private guest cabins, each staffed with its own butler.  It was one of the largest of the Adirondack great camps and possibly the most elaborately furnished.

The Causeway (Washington, D.C.): The Causeway, also known as the Tregaron, is a country house estate located in the Cleveland Park neighborhood of Northwest, Washington, D.C..  The estate was designed by Charles A. Platt and constructed in 1912.  The original occupants, the Parmelees, lived at the estate from its construction until 1940.  From 1940 to 1958 it was occupied by Joseph E. Davies, who had served as the ambassador for the United States to Luxembourg, Belgium, and the Soviet Union and his second wife Post Cereal Company heiress Marjorie Merriweather Post.  Today the estate is occupied by a campus for the Washington International School and the Tregaron Conservancy.

Supporting paragraphs: Trump magazines Mar-a-Lago
Answer: Mar-a-Lago