Lougheed House, or as it was originally known Beaulieu, (French meaning "beautiful place") is a National Historic Site located in the Beltline district of Calgary, Alberta.

Originally constructed in 1891 as a home for Senator James Alexander Lougheed KCMG PC KC and his wife Isabella Clarke Hardisty, the structure has since become an iconic heritage building in Calgary.

Influences of Romanesque Revival is found with the steep roof, and the cone shaped towers emanate French Chateau architecture.

[4] The interior of the 48-room house is decorated with Spanish mahogany, Italian marble, stained glass windows and doors, and hand-painted images of Alberta flora and fauna.

[5] The Lougheed House Conservation Society was created in 1995 after local lobbying began to see the mansion and grounds restored to their former glory.

[14] The City of Calgary purchased surrounding areas in the early 1990s with the intention of creating an outdoor public space, and construction began in 1997 to rebuild the Beaulieu Gardens, and restore the mansion.