Dollar, Ontario

ATI Technologies Inc., commonly called ATI, was a Canadian semiconductor technology corporation based in Markham, Ontario, that specialized in the development of graphics processing units and chipsets. Founded in 1985, the company listed publicly in 1993 and was acquired by AMD in 2006. As a major fabrication-less or fabless semiconductor company, ATI conducted research and development in-house and outsourced the manufacturing and assembly of its products. With the decline and eventual bankruptcy of 3dfx in 2000, ATI and its chief rival Nvidia emerged as the two dominant players in the graphics processors industry, eventually forcing other manufacturers into niche roles. The acquisition of ATI in 2006 was important to AMD's strategic development of its Fusion generation of computer processors, which integrated general processing abilities with graphics processing functions within a chip. Since 2010, AMD's graphics processor products have ceased using the ATI brand name.

St. Robert Catholic High School is a secondary school in Thornhill, Ontario, Canada.

Buttonville Municipal Airport or Toronto/Buttonville Municipal Airport (IATA: YKZ, ICAO: CYKZ) was a medium-sized airport in the neighbourhood of Buttonville in Markham, Ontario, Canada, 29 km (18 mi) north of Downtown Toronto, which closed on November 24, 2023. It was operated by Torontair. Due to its location within Toronto's suburbs, there were several strict noise-reduction procedures for aircraft using the airport, which was open and staffed 24 hours a day, 365 days a year. In 2014, Buttonville was Canada's 20th busiest airport by aircraft movements. There was also a weather station located at the airport, which was still operational on the site but closed along with the airport (weather data for Markham is now referencing to Toronto City Centre Airport by Environment Canada). The airport was classified as an airport of entry by Nav Canada and was serviced by the Canada Border Services Agency (CBSA) on a call-out basis from Oshawa Executive Airport during weekdays and Billy Bishop Toronto City Airport on the Toronto Islands during weekends. CBSA officers at this airport handled general aviation aircraft only, with no more than 15 passengers.The airport was slated to cease all operations on November 30, 2023, following a private notice to all tenants at the airport. A NOTAM was issued stating CYKZ was officially closed at 11:00 (EST) on November 24, 2023.

TMS, formerly Toronto Montessori Schools, is one of the oldest Montessori schools in Canada. Founded by Helma Trass in 1961, it still remains the most well-known Montessori school in Ontario. The school moved to Richmond Hill from Toronto in 1964. The school's Bayview Campus (18 months to Grade 6 students) and the Elgin Mills Campus (Grades 7 to 12) are located in Richmond Hill, Ontario, Canada. The Head of School is currently Mr. Andrew Cross. The school's first location was in Toronto, which is why, despite being located now in Richmond Hill, it maintained its name 'Toronto Montessori Schools'.Toronto Montessori Institute opened in 1971 at Victoria College, University of Toronto and relocated to Richmond Hill in 1980.The TMS School Bayview Campus is located at 8569 Bayview Avenue and is one of the flagship Montessori schools for students aged 18 months to Grade 6. The TMS School Elgin Mills Campus, which opened its doors in September 2009, is an International Baccalaureate (IB) facility for students in TMS Upper School (Grades 7 to 12) – an IB World School with both the IB Middle Years Programme and the IB Diploma Programme. Also located at the Bayview Campus address is the Toronto Montessori Institute (TMI), founded in 1971 and one of the oldest teacher training Montessori schools in Canada. TMS School remains a flagship Montessori school (18 months to Grade 6) and IB world school (Grades 7 to 12) and has been internationally recognized since 1961. TMS has announced in May 2023 its intention to change its name to "Lauremont Schools" in September of the 2024-2025 school year. The "Laure" part of the new name stands for Baccalaureate, and "mont" for Montessori .

Brown's Corners is an unincorporated community in Markham, Regional Municipality of York in the Greater Toronto Area of Ontario, Canada and located near the corner of Woodbine Avenue and Highway 7. The community, founded in 1842, was named for local settler Alexander Brown, Sr. (1771–1851) who acquired 100 acres (40 ha) in 1838. Beaver Creek flows through it. The community is mixed into another unincorporated community of Buttonville, Ontario.

Peoples Christian Academy (PCA) is a JK–12 private, Christian co-educational school in Markham, Ontario, Canada. It was established in 1971 as an elementary school.

Headford United Church is a historic church in Richmond Hill, Ontario, Canada. Currently known as Orthodox Church of the Nativity of the Mother of God.

Thornlea Secondary School is a public high school, in the Regional Municipality of York, that opened in 1968 and is located in Thornhill, Ontario, Canada, on the northeast corner of Bayview Avenue and Willowbrook Road, just south of Highway 407. The school began in 1968 as an educational experiment. The curriculum was varied and specialized, following a trimester system, and students were encouraged to address their teachers by their first names and focus on independent learning. Around 1980 this model gave way to a more traditional academic environment.

Buttonville is a suburban planned neighbourhood from a former police village in the city of Markham, Ontario, Canada, west of the larger Unionville neighbourhood. the former hamlet and police village named after its founder, John Button. About 30,000 residents live in the area, which is located along the Woodbine Avenue corridor from approximately Highway 7 in the south to Sixteenth Avenue in the north. The Rouge River is in the northeast and Buttonville Municipal Airport and Highway 404 are in the west, with three interchanges. The residential area is located in the eastern, northeastern, and the northern sections, and the industrial area is to the west and the south down to Highway 7. The area is home to many technology companies near the airport, which incidentally is the location from which weather reports are taken for Environment and Climate Change Canada by the Department of National Defence. There is talk about renaming the community to the John Button Community after its founder since there has been confusion between Unionville and Buttonville, which is popularly considered to be part of Unionville.

Thornlea station was a station in Ontario, Canada served by CN commuter trains bound for Capreol/Parry Sound. The station was 16 miles north of Toronto Union. The station closed when CN's commuter services through the Bala Subdivision were discontinued. GO Transit's Richmond hill line operates services through the station's site but trains don't call at Thornlea station, instead calling at new stations in Old Cummer and Langstaff.

German Mills is a community within the city of Markham in Ontario, Canada. The easternmost community in the historic town of Thornhill, German Mills was named for the early German settlers in the area.

Shouldice Hospital (formerly Shouldice Hernia Centre) is a private hospital located in Markham, Ontario, Canada, at 7750 Bayview Avenue in the Thornhill district. The hospital specializes in hernia care. Its location is the former estate of George McCullagh, a publisher who created The Globe and Mail newspaper in 1936.