Question: Which hospital was shown in Southpark's highest viewed episode?

Context articles: The Last One (Friends)
24: Legacy
Virtuoso (Star Trek: Voyager)
MasterChef Australia (series 3)
Cartman's Mom Is a Dirty Slut
List of All-Stars and Pahkitew Island episodes
The Pineapple Incident
Ellis Island Immigrant Hospital
Sharon Watts
Cartman's Mom Is Still a Dirty Slut

"The Last One" is the series finale of the television sitcom "Friends".
 The episode serves as the seventeenth and eighteenth episode of season ten; the episode's two parts were classified as two separate episodes.
 It was written by series creators David Crane and Marta Kauffman, and directed by executive producer Kevin S. Bright.
 The series finale first aired on NBC in the United States on May 6, 2004, when it was watched by 65.9 million viewers, making it the most watched entertainment telecast in six years and the fourth most watched overall television series finale in U.S. history, as well as the most watched episode from any television series throughout the decade 2000s on U.S. television.
 In Canada, the finale aired simultaneously on May 6, 2004 on Global, and was viewed by 5.16 million viewers, becoming the highest viewed episode of the series, and also becoming highest-viewed and highest-rated episode ever in Canada for a sitcom.
24: Legacy is an American television series created by Manny Coto and Evan Katz that aired on Fox network from February 5 to April 17, 2017.
 The series is a spin-off of "24" which was created by Joel Surnow and Robert Cochran and its premiere served as the lead-out program for Super Bowl LI before moving to its regular time slot of Monday at 8:00 p.m.
 The series' premiere was watched by 17.6 million people, the lowest post-Super Bowl program viewership since 2003's "Alias" but the most viewed episode in the franchise's history.
"Virtuoso" is the 13th, and least viewed episode of the of the science fiction television series "", 133rd episode overall.
 It was aired on January 26, 2000.
 Ratings for the episode rank among the lowest within the series.
The third series of MasterChef Australia premiered on Sunday, 1 May 2011 at 7:30 pm on Network Ten.
 Judges George Calombaris, Gary Mehigan and Matt Preston returned from the previous series and were joined by Matt Moran.
 The third series was won by Kate Bracks who defeated Michael Weldon in the grand finale on 7 August 2011.
 The second part of the series' final (episode 85, "The Winner Announced"), attracted an audience of 2.74 million viewers, making it the third most viewed episode of any Australian television series of 2011, only beaten by the final episodes of The Block (3.09 million) and Australia's Got Talent (2.98 million).
"Cartman's Mom Is a Dirty Slut" is the first season finale of the American animated television series "South Park".
 It originally aired on Comedy Central in the United States on February 25, 1998.
 The episode is the highest viewed episode in the entire "South Park" series, with 6.4 million views.
 It is part one of a two-episode story arc, which concluded with "Cartman's Mom Is Still a Dirty Slut".
 The episode follows Eric Cartman, one of the show's child protagonists, becoming curious about the identity of his father.
 He discovers that his father is most likely a man his mother had sexual intercourse with during an annual party called "The Drunken Barn Dance".
 Meanwhile, his friends Stan, Kyle and Kenny participate on "America's Stupidest Home Videos", after filming Cartman playing in his yard with plush toys.
This is a list of the episodes for "Total Drama All-Stars" and "Total Drama: Pahkitew Island", two segments which make up the fifth season of the "Total Drama" series, a Canadian animated television series.
 This season is a sequel to "Total Drama Island", "Total Drama Action", "Total Drama World Tour", and "".
 This season also features the 100th episode of the whole series, which aired in Canada on February 27, 2014.
 The series' 100th episode is the 9th episode of this season which is called "Zeek and Ye Shall Find".
 The first episode was the highest viewed telecast on Cartoon Network for the week of the season premiere.
 This season is twenty-six episodes long, each episode twenty-two minutes in length, excluding commercials.
"The Pineapple Incident" is the tenth episode in the first season of the television series "How I Met Your Mother".
 It originally aired on November 28, 2005.
 It is the highest viewed episode in season 1 and the second highest overall episode during the nine seasons of "How I Met Your Mother".
 It is widely considered of the best episodes in the entire series.
The Ellis Island Immigrant Hospital, also known as USPHS Hospital #43, was the United States’ first public health hospital, opened in 1902 and operating as a hospital until 1930.
 Constructed in phases, the facility encompassed both a general hospital and a separate pavilion style contagious disease hospital.
 The hospital served as a detention facility for new immigrants who were deemed unfit to enter the United States after their arrival; immigrants would either be released from the hospital to go on to a new life in America or sent back to their home countries.
 The hospital was one of the largest public health hospitals in United States history and is still viewed today as an extraordinary endeavor in the public health field.
 While the monument is managed by the National Park Service as part of the National Parks of New York Harbor office, the south side of Ellis Island has been off-limits to the general public since its closing.
 Efforts to restore the hospital buildings and others on the island are being made by government partner Save Ellis Island.
 In October 2014, the hospital opened to the public for small group hard hat tours.
Sharon Anne Mitchell (also Watts and Rickman) is a fictional character from the BBC One soap opera "EastEnders", played by Letitia Dean.
 Sharon is one of "EastEnders"' original characters, appearing in the first episode broadcast on 19 February 1985.
 The character was conceptualised by Tony Holland and Julia Smith, the creators of "EastEnders".
 Sharon was a teenager when the programme began: the adoptive daughter of Den and Angie Watts.
 Sharon remained a prominent character into the 1990s due to romantic pairings with brothers Grant (Ross Kemp) and Phil Mitchell (Steve McFadden).
 In a long-running storyline dubbed "Sharongate", Sharon, married to Grant, has an affair with Phil.
 Grant's discovery of the affair remains one of "EastEnders"' highest viewed episodes.
 Dean quit the role in 1995 after ten years, with Sharon departing following the breakdown of her marriage.
"Cartman's Mom Is Still a Dirty Slut" is the second episode in the second season of the American animated television series "South Park".
 The 15th episode of the series overall, it premiered on Comedy Central in the United States on April 22, 1998.
 The episode concludes the storyline of the season one finale "Cartman's Mom Is a Dirty Slut"; Mephesto is suddenly shot, just as he is about to reveal the identity of Cartman's father.
 The four boys and Chef rush him to Hell's Pass Hospital while the town of South Park experiences a massive blizzard.