who designed the hotel mentioned in the beginning?
McKim, Mead & White
Plaza Hotel
The hotel is located on the western side of Grand Army Plaza at the intersection with Central Park South (59th Street), on the southeastern corner of Central Park and just west of Fifth Avenue. Construction on the first Plaza Hotel at this location began in 1883. After the original builders foreclosed, McKim, Mead & White completed the hotel and it opened in 1890. The current 19-story, French Renaissance-inspired château-style building was designed by Henry Janeway Hardenbergh. Built in 27 months, it opened in 1907. The green terracotta-tile roof was manufactured by Ludowici and can be seen from many vantage points around the city.

who owns the plaza hotel in new york Katara Hospitality what is the significance of this place? The Plaza hotel has been the meeting place for important political meetings; notable singers have performed in the Persian room; it has The Grand Ballroom, Terrace Room etc who are the aforementioned hospitality group? Katara Hospitality, formerly known as Qatar National Hotels Company, is the largest hotel owner, developer and operator in Qatar. It is government-owned. what is its history? Formed in 1970 as Qatar National Hotels Limited (QNH). In 1973, Marriott Hotel  owned by QNH, became the country's five-star hotel. In 1993, this company was replaced by Qatar Nationals Hotel Company. Eventually, in 2012, QNH was rebranded under its current form, Katara Hospitality.
wiki:20653974
Plaza Hotel [SEP] Introduction
The Plaza Hotel is a 20-story luxury hotel and condominium apartment building in Midtown Manhattan in New York City. It opened in 1907 and is now owned by Katara Hospitality. The hotel is located on the western side of Grand Army Plaza at the intersection with Central Park South (59th Street), on the southeastern corner of Central Park and just west of Fifth Avenue. Construction on the first Plaza Hotel at this location began in 1883. After the original builders foreclosed, McKim, Mead & White completed the hotel and it opened in 1890. The current 19-story, French Renaissance-inspired château-style building was designed by Henry Janeway Hardenbergh.