Open – Each year, the City of West Hollywood hosts its incomparable Halloween Carnaval, one of the most unique Halloween gatherings in the world. This year’s West Hollywood Halloween Carnaval will take place on Thursday, October 31, 2019 from 6 p.m. to 11 p.m. on a one-mile stretch of Santa Monica Boulevard between Doheny Drive and La Cienega Boulevard. The event is free and open for all to enjoy, but children and pets are discouraged from attending because of dense crowds.