[4] In 2008, most of the Town of Mount Royal was designated a National Historic Site of Canada, as a "[remarkable] synthesis of urban renewal movements of the early 20th century, reflecting the influence of the City Beautiful, Garden City and Garden Suburb movements".

The company bought 4,800 acres (1,900 ha) of farmland, and then built a rail tunnel under Mount Royal connecting their land to downtown Montreal.

The town was designed by Canadian Northern's chief engineer, Henry Wicksteed, based loosely on Washington, D.C.

The garden city's coat of arms is composed of several significant elements:[9] One notable feature of the town is the naming of some of its streets, and also its occasionally idiosyncratic numbering system.

On these few hundred metres (yards), TMR uses a house civic numbering totally different from that of Montreal on either side.

This sort of change in the numbering system also occurs on smaller streets shared by both Montreal and TMR (for example, Trenton, Lockhart and Brookfield avenues, where the TMR numbering system decreases from East to West, only to jump from 2 to 2400 on the few metres (yards) of the street that still belong to Montreal.

So special was the Montreal melon that it was exported to New York, Chicago and Boston, where, in 1921, people paid as much as $1.50 a slice to taste it.

A fence runs along the eastern border with Park Extension at L'Acadie Boulevard, a six lane thoroughfare.

The stated purpose of the fence is to prevent children and house pets from running into the busy thoroughfare but some have contended that it was built to keep residents of the working-class Park Extension neighbourhood out of the town.

According to the Office québécois de la langue française, Mont-Royal has been officially recognized as a bilingual municipality[12] since 2005-11-02.

Since October 2022, the riding is represented by Liberal Michelle Setlakwe that replaced the long time MP Pierre Arcand.