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 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: 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: One Biscayne Tower is an office skyscraper in Miami, Florida, United States. It is located on the eastern edge of Downtown Miami, on South Biscayne Boulevard. It comprises Class A office space completely. The approximately 983,000 square feet building contains 39 floors and is 492 ft (150 m) tall, to the roof.

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: Villa Jeanneret and Villa La Roche are two houses in Paris, designed by Le Corbusier and Pierre Jeanneret in 1923-1925 and renovated by Charlotte Perriand in 1928. No longer inhabited, they house the Fondation Le Corbusier museum and archives. The houses are located at 8-10 square du Docteur-Blanche, 16th arrondissement, Paris. Villa Jeanneret is not open to the public.

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: Elven C. Smith House is a historic home located at Williamson, Mingo County, West Virginia. It was built in 1938, in a Neo-Classical Revival / Georgian Revival style. It is a red brick building with a hipped roof and features a two-story, flat roofed portico supported by fluted columns. Also on the property is a stone retaining wall and monumental stairway in the landscaped gardens.

paragraph_text: Edwardes Square is a garden square in Kensington, London, W8. The square was built between 1811 and 1820. 1–23 and 25–48 Edwardes Square are listed Grade II for their architectural merit.

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

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: Boone's Chapel is a Grade I listed, single-storey building attributed to Sir Christopher Wren and built in 1683. The chapel is very small, measuring just 45 square metres and is constructed of red brickwork with Portland stone details to window architraves, rusticated quoins and a pyramidal roof with an open wood cupola. It is located adjacent to the Worshipful Company of Merchant Taylors almshouses on Lee High Road in Lewisham, London and is one of only two Grade I-listed buildings in the borough of Lewisham (the other is St Paul's, Deptford).

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: The Yuengling Bicentennial Park and Gardens ( ) is a city park located in Pottsville, Pennsylvania, United States, which originally opened in the late 1800s and then again in 2005.

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 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: 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: 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: 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 where Edwardes Square is located open to the public?
Answer: 1980s