Question: Zoro Garden Nudist Colony was an attraction at the 1935-36 Pacific International Exposition in Balboa Park, is a 1200 acre urban cultural park in San Diego, California, in which country?

Context paragraphs:
Richard Requa: Richard Smith Requa (March 27, 1881 - June 10, 1941) was an American architect, largely known for his work in San Diego, California.  Requa was the Master Architect for the California Pacific International Exposition held in Balboa Park in 1935-36.  He improved and extended many of the already existing buildings from an earlier exposition, as well as creating new facilities including the Old Globe Theater.

Balboa Park (San Diego): Balboa Park is a 1200 acre urban cultural park in San Diego, California, United States.  In addition to open space areas, natural vegetation zones, green belts, gardens, and walking paths, it contains museums, several theaters, and the world-famous San Diego Zoo.  There are also many recreational facilities and several gift shops and restaurants within the boundaries of the park.  Placed in reserve in 1835, the park's site is one of the oldest in the United States dedicated to public recreational use.  Balboa Park is managed and maintained by the Parks and Recreation Department of the City of San Diego.

California Pacific International Exposition: The California Pacific International Exposition was an exposition held in San Diego, California during May 29, 1935–November 11, 1935 and February 12, 1936–September 9, 1936.  The exposition was held in Balboa Park, San Diego's large central urban park, which had also been the site of the earlier Panama-California Exposition in 1915.

San Diego Automotive Museum: The San Diego Automotive Museum in Balboa Park in San Diego, California is a museum that features a collection of cars and motorcycles that highlight automotive culture throughout history.  The San Diego Automotive Museum is a non-profit corporation under IRS section 501(c) It is housed in the former California State Building, built for the 1935-36 California Pacific International Exposition.

House of Hospitality (Balboa Park): The House of Hospitality is a building located at San Diego's Balboa Park, in the U.S. state of California.  It was originally built for the Panama–California Exposition (1915) as the Foreign Arts Building.  Intended to be temporary, and was changed to the House of Hospitality for the California Pacific International Exposition (1935).  The building was demolished in the 1990s for structural reasons and later reconstructed using the original building as a model.

Starlight Bowl (San Diego): The Starlight Bowl is an amphitheater located in Balboa Park in San Diego, California.  It was constructed for the 1935–1936 California Pacific International Exposition and seats 4,300.  It was originally named the Ford Bowl because the automobile manufacturer sponsored outdoor concerts at the venue during the exposition by the Mormon Tabernacle Choir, the San Francisco Symphony, and other performers.

Zoro Garden Nudist Colony: Zoro Garden Nudist Colony was an attraction at the 1935-36 Pacific International Exposition in Balboa Park in San Diego, California.  It was located in Zoro Garden, a sunken garden originally created for the 1915-16 Panama-California Exposition.  Billed as a nudist colony, it was populated by hired performers rather than actual practicing nudists.  The women wore only G-strings; the men wore loincloths or trunks.  The participants lounged around in their "colony", played volleyball and other games, and performed a quasi-religious "Sacrifice to the Sun God" five times a day.  Fair attendees could pay for admission to bleacher-type seats, or they could peek through knotholes in a wooden fence for free.  On August 27, 1936, the colony closed, allegedly "after an argument with Exposition officials about finances."

El Prado Complex: The El Prado Complex is a historic district in Balboa Park in San Diego, California.  The 13 acre complex includes 13 contributing buildings and one contributing structure.  Most of the structures were built for San Diego's Panama-California Exposition of 1915–16 and were refurbished and re-used for the California Pacific International Exposition of 1935–36.  The original architects were Bertram Goodhue and Carleton Winslow.  The area was listed on the National Register of Historic Places in 1976.

Ford Building (San Diego): The Ford Building, a Streamline Moderne structure in Balboa Park, San Diego, California, serves as the home of the San Diego Air & Space Museum.  The building was originally built by the Ford Motor Company for the California Pacific International Exposition, which was held in 1935 and 1936.  In the middle of the museum the Ford's Hall is used for weddings, balls, parties, and other occasions.

House of Pacific Relations International Cottages: The House of Pacific Relations International Cottages is a complex of cottages in San Diego's Balboa Park, in the U.S. state of California.  Built for the 1935 California Pacific International Exposition, they currently house 33 groups that "promote multicultural goodwill and understanding through educational and cultural programs".

Supporting paragraphs: Zoro Garden Nudist Colony Balboa Park (San Diego)
Answer: United States