Rideau River in the context of "Sandy Hill, Ottawa"

Ottawa is the capital city of Canada. It is located in the southern portion of the province of Ontario, at the confluence of the Ottawa River and the Rideau River. Ottawa borders Gatineau, Quebec, and forms the core of the Ottawa–Gatineau census metropolitan area (CMA) and the National Capital Region (NCR). As of 2021, Ottawa had a city population of 1,017,449 and a metropolitan population of 1,488,307, making it the fourth-largest city and fourth-largest metropolitan area in Canada.

Ottawa is the political centre of Canada and the headquarters of the federal government. The city houses numerous foreign embassies, key buildings, organizations, and institutions of Canada's government; these include the Parliament of Canada, the Supreme Court, the residence of Canada's viceroy, and the Office of the Prime Minister.

The Rideau Canal is a 202-kilometre long canal that links the Ottawa River at Ottawa with the Cataraqui River and Lake Ontario at Kingston, Ontario, Canada. Its 46 locks raise boats from the Ottawa River 83 metres (272 feet) upstream along the Rideau River to the Rideau Lakes, and from there drop 50 metres (164 feet) downstream along the Cataraqui River to Kingston.

The Rideau Canal opened in 1832 for commercial shipping. Freight was eventually moved to railways and the St. Lawrence Seaway, but the canal remains in use today for pleasure boating, operated by Parks Canada from May through October. It is the oldest continuously operated canal system in North America, and is a UNESCO World Heritage Site.

The Cummings Bridge in Ottawa, Ontario, Canada, crosses the Rideau River, connecting Rideau Street to Montreal Road in Vanier. It is a multi-span open spandrel arch bridge, constructed in 1921 and renovated in 1996.

Vanier (formerly Eastview) is a neighbourhood in the Rideau-Vanier Ward of the east end of Ottawa, Ontario, Canada. Historically francophone and working class, the neighbourhood was a separate city until being amalgamated into Ottawa in 2001. It no longer has a majority francophone population. By 2012 its francophone population had shrunk to less than 40% from 63% in the early 1980s. The neighbourhood is located on the east bank of the Rideau River, across from the neighbourhoods of Lowertown and Sandy Hill, and just south of Rockcliffe Park, New Edinburgh, Lindenlea, and Manor Park. To the east of Vanier are the suburbs of Gloucester. Vanier has a relatively small area with a high population density.

The Rideau Falls (French: Chutes Rideau) are two waterfalls located in Ottawa, Ontario, Canada, where the Rideau River empties into the Ottawa River.

Sussex Drive (French: Promenade Sussex), also known as Ottawa Regional Road 93, is an arterial road in Ottawa, Ontario, the capital of Canada. It is one of the city's main ceremonial and institutional routes. Travelling roughly parallel to the Ottawa River, Sussex Drive begins as a continuation of Sir George-Étienne Cartier Parkway at Rideau Gate, at the entrance to Rideau Hall. It travels south to Rideau Street, with the portion south of St. Patrick Street forming the northbound half of a one-way pair with Mackenzie Avenue. Both Mackenzie Avenue and Sussex Drive connect with Colonel By Drive at their southern end, which continues south alongside the Rideau Canal.

Sussex Drive was laid out as three separately named streets during the establishment of Ottawa in the first half of the 19th century: Sussex Street, between Bolton Street and Rideau Street; Metcalfe Street, between Bolton Street and the Rideau River; and Ottawa Street between the river and Rockcliffe Park. The latter two were renamed as an extension of Sussex Street following Ottawa's annexation of New Edinburgh in 1886. Numerous government institutions were established along Sussex in the early 20th century, and embassies were established following World War II. As a result of the Greber Plan, the road was widened and rebuilt and the buildings along it refurbished throughout the 1950s and 1960s. It was renamed Sussex Drive in November 1953 during a visit by the Queen Mother.