paragraph_text: The museum operates from two sites within London. The main site in Covent Garden uses the name of its parent institution, sometimes suffixed by "Covent Garden", and is open to the public every day, having reopened in 2007 after a two-year refurbishment. The other site, located in Acton, is known as the London Transport Museum Depot and is principally a storage site that is open on regular visitor days throughout the year.

paragraph_text: Marie de St Pol, Countess of Pembroke (c.1303–1377) was the wife of Aymer de Valence, Earl of Pembroke, and is best known as the foundress of Pembroke College, Cambridge.

paragraph_text: Garvan Woodland Gardens is a 210-acre (850,000 m²) botanical garden located at 550 Arkridge Road, approximately 6 miles from Hot Springs National Park in Hot Springs, Arkansas, United States. Owned by the University of Arkansas, it has the stated mission of education, research and public service. For an admission fee, it is open daily, except on Thanksgiving Day, Christmas Day and the month of January.

paragraph_text: The National Orchid Garden, located within the Singapore Botanic Gardens, was opened on 20 October 1995 by Singapore's Minister Mentor Lee Kuan Yew.

paragraph_text: Charles W. Flanagan High School opened its doors in 1996 as the first public high school in Pembroke Pines, Florida. Flanagan High School is located near Broward County's C.B. Smith Park and the Walter C. Young Middle School and Resource Center.

paragraph_text: Dallam Tower is a grade I listed country house in Beetham parish, near Milnthorpe, South Lakeland, Cumbria, England. It is a member of the Historic Houses Association but is not open to the public except for occasional charity events, visits to the garden through the National Gardens Scheme, and as a wedding venue.

paragraph_text: The Ballarat Botanical Gardens Reserve, located on the western shore of picturesque Lake Wendouree, in Ballarat, Victoria, Australia, covers an area of 40 hectares which is divided into three distinct zones. The central Botanical Gardens reserve in the 'gardenesque' style of the Victorian pleasure garden. On either side there are open parkland buffers known as the North and South Gardens. The Gardens celebrated its sesquicentenary (150 years old) in 2007.

paragraph_text: The new embassy in Nine Elms, London has been open to the public since 13 December 2017, and was formally opened on 16 January 2018. From 1960 to 2018, it was located in the London Chancery Building in Grosvenor Square, Westminster, London.

paragraph_text: Highline Botanical Garden is a community botanical garden located at 13735 24th Avenue South, SeaTac, Washington. It is open daily without charge.

paragraph_text: Another important library – the University Library, founded in 1816, is home to over two million items. The building was designed by architects Marek Budzyński and Zbigniew Badowski and opened on 15 December 1999. It is surrounded by green. The University Library garden, designed by Irena Bajerska, was opened on 12 June 2002. It is one of the largest and most beautiful roof gardens in Europe with an area of more than 10,000 m2 (107,639.10 sq ft), and plants covering 5,111 m2 (55,014.35 sq ft). As the university garden it is open to the public every day.

paragraph_text: The building housed the department store Derry and Toms until 1973, and then Biba until 1975. Since the 1980s the garden has been used as a restaurant and club.

paragraph_text: Pembroke is a town in Merrimack County, New Hampshire, United States. The population was 7,115 at the 2010 census. Pembroke includes part of the village of Suncook. The center of population of New Hampshire is located in Pembroke.

paragraph_text: Sally Watson House is a historic home located in the Germantown neighborhood of Philadelphia, Pennsylvania. It was designed by architect Wilson Eyre and built in 1889. It is a three-story, rubble schist and shingle dwelling in the Shingle style. It has a gambrel roof and measures approximately 43-feet square.

paragraph_text: Presby Memorial Iris Gardens is a nonprofit, volunteer-run living museum specializing in iris flowers, located at 474 Upper Mountain Avenue, Montclair in Essex County, New Jersey, New Jersey, United States. The gardens are situated on 6.5 acres. Adjacent to the gardens is a Victorian house, the Walther House. The house is open to the public and is home to a museum shop and headquarters for the Citizens Committee that oversees the gardens.

paragraph_text: Sergels torg ("Sergel's Square") is the most central public square in Stockholm, Sweden, named after 18th-century sculptor Johan Tobias Sergel, whose workshop was once located north of the square.

paragraph_text: Way Four is a public art work by artist Bernard Kirschenbaum at the Lynden Sculpture Garden near Milwaukee, Wisconsin. The stainless steel sculpture is an open circle that creates an orbit for two triangles; it is installed on the lawn.

paragraph_text: Aziz Ansari: Live at Madison Square Garden is a 2015 American stand-up comedy film starring, written, directed and produced by Aziz Ansari. It was shot at Madison Square Garden in New York City in October 2014.

paragraph_text: Pembroke Square is located in the Kensington area of southwest central London, England (postcode W8). The whole square is Grade II listed for its architectural merit. It was developed by the Hawks family.

paragraph_text: The Cleveland Botanical Garden, located in the University Circle neighborhood of Cleveland, Ohio, in the United States, was founded in 1930 as the Garden Center of Greater Cleveland. It was the first such organization in an American city. Originally housed in a converted boathouse on Wade Park Lagoon, the center served as a horticultural library, offering classes and workshops for gardeners and spearheading beautification projects in the community. In 1966, having outgrown its original home, the Garden Center moved to its present location in University Circle, the site of the old Cleveland Zoo. Remnants of the old bear pit still remain in the Ohio Woodland Garden. In 1994, the organization's Board of Trustees changed the name to Cleveland Botanical Garden to reflect a dramatically expanded mission and launched an ambitious capital campaign to develop a facility that would support the enhanced program agenda. The expanded and renovated building, designed by Graham Gund Architects of Cambridge, Massachusetts, opened to the public in July 2003.

paragraph_text: Boston Garden was an arena in Boston, Massachusetts. Designed by boxing promoter Tex Rickard, who also built the third iteration of New York's Madison Square Garden, it opened on November 17, 1928 as "Boston Madison Square Garden" (later shortened to just "Boston Garden") and outlived its original namesake by 30 years. It was above North Station, a train station which was originally a hub for the Boston and Maine Railroad and is now a hub for MBTA Commuter Rail and Amtrak trains.

Question: When did the roof gardens above Pembroke Square's location open to the public?
Answer: 1980s