Spirits On The Loch: A Lake County Time Adventure

Austin Park Austin Road at Lakeshore Drive, Clearlake, CA, United States

This family-friendly celebration is open to the public and will feature music, food, vendors and home-made steam-powered boats.

Halloween Costume Contest and Sidewalk Stroll

City Park 1st Street and Military W, Benicia, CA, United States

Benicia Main Street offers a great time for kids of all ages during the popular Halloween costume contest and sidewalk stroll.

Downtown Livermore Halloween Carnival

Historic Downtown Livermore McLeod Street between First and Second Street, Livermore, CA, United States

Activities for families with children in the 5th grade and younger! Kids will enjoy the Costume Contest, Carnival Games, Activities and some Surprise Entertainment!

Spirits and Shadows at History Park

San Jose History Park 635 Phelan Avenue,, San Jose, CA, United States

Join the mad scientists, Victorians, Steampunk time travelers, grave diggers, ghosts, ghouls, and vampires as we wander through the park where the veil between this life and the next is stretched thin for an adult-only evening of dance and fun!

Monsters Ball on board the USS Hornet

USS Hornet Museum 707 W Hornet Avenue, Pier 3, Alameda, CA, United States

Kick off your Halloween onboard the Haunted USS Hornet!

Haunt the History Park

San Jose History Park 635 Phelan Avenue,, San Jose, CA, United States

This scare-free annual event has become a tradition, with trick-or-treating, family-friendly events and arts and crafts activities.

Trick-or-Treat in Downtown Campbell

Historic Downtown Campbell along E Campbell Avenue between Harrison Avenue and Winchester Boulevard, Campbell, CA, United States

Come to Downtown Campbell for our annual Halloween trick-or-treat to be held, for the first time, on Halloween itself!

Green Halloween: A Spooktacular Evening!

The dhyana Center 186 N. Main Street, Sebastopol, CA, United States

Costume Contest, Great Prizes, DJ, Food, Fun, Past Life Consultations, Releasing Negative Energy Cauldron, Demons of Self Sabotage, Immunoglobulins Fight Foreign Invaders

Zombie Ball

Sebastopol Community Cultural Center 390 Morris Street, Sebastopol, CA, United States

Return of the Creature from the Black Laguna - The Creature wants his hospital back!

Pan’s Garden Samhain Ritual

private home in Palo Alto 416 Chaucer Street, Palo Alto, CA, United States

Come in costume! There will be a voting box on the dining table with papers and pen to cast your vote for the best costume, and the winner gets a prize!