Euclid Hall

Euclid Hall, now widely recognized as the Keg Mansion, is a designated heritage property located at 515 Jarvis Street in Toronto, Ontario. Completed in 1868 and designed by architect William Young, the structure is a prominent example of Gothic Revival architecture. When originally constructed for Arthur McMaster, the nephew of prominent banker William McMaster, the residence stood amidst large gardens in one of the city's wealthiest neighborhoods. The building features a distinctive exterior characterized by a neutral color palette, green brass accents over the windows, and red shingles on its turret. As a private home, it was an expansive estate comprising twenty-six rooms, seventeen fireplaces, and a substantial brick carriage house.

The property holds significant historical value due to its association with influential Canadian families and institutions. In 1882, it was purchased by Hart Massey and his wife, who undertook renovations after returning from Cleveland. Decades later, in 1915, the Massey family bequeathed the mansion to Victoria College, a federated college of the University of Toronto. Recognizing its architectural and cultural importance, the City of Toronto officially designated the building as a heritage property under Part IV on November 12, 1975. This status helps preserve the external grandeur of the home despite extensive internal changes made over the last century.

Today, the building serves a commercial purpose as a location for The Keg restaurant chain, a use established in 1976. While the interior has been significantly altered from its original residential layout to accommodate dining services, the exterior retains its historic charm and structural integrity. The site remains a landmark on Jarvis Street, representing a rare surviving example of the large manors that once lined the avenue. Visitors can dine within this piece of Toronto's history, which continues to operate as a popular establishment while maintaining its protected status as a key element of the city's built heritage.