Complex sentence: The Lasky-DeMille Barn, where the Hollywood Heritage Museum is now located, was built in about 1895 on the Hollywood, California, citrus ranch of Robert Northam for horses, carriages, hay, and other farm supplies.
Split into simpler sentences: The Lasky-DeMille Barn, where the Hollywood Heritage Museum is now located, was built in about 1895 on the Hollywood, California, citrus ranch of Robert Northam. It housed horses, carriages, hay, and other farm supplies.