A Gothic Revival style house and gardens in midtown Toronto, Ontario, Canada, that is now a museum and landmark. It was built as a residence for financier Sir Henry Mill Pellatt. Casa Loma was constructed from 1911 to 1914. The architect was E. J. Lennox. The house cost about $3.5 million and took 300 workers three years to build. It has 98 rooms covering 64,700 square feet 6,011 m2.