Washington Terrace is a residential private place in St. Louis, Missouri, laid out circa 1892. The gate is south of Union and Delmar, within the bounds of the Central West End.
A private place is a self-governing enclave whose common areas like streets and common gardens are owned by the residents, with services are provided by the private sector, an experiment that foreshadowed the gated community in the U.S. by 100 years. About 50 of these enclaves once stood within the borders of the city of St. Louis. Most were designed by civil engineer Julius Pitzman between 1868 and 1905. Many of these developments, like Washington Terrace, are well-preserved and still gated, patrolled, and functioning as private enclaves.