The nation's spookiest holiday is right around the corner and the biggest cities on the West Coast are preparing to party in full force as nightclubs, music festivals and street fairs get ready for Halloween 2012. Check out the best Halloween 2012 events in San Francisco, Los Angeles, Las Vegas and San Diego in our party guides below.

San Francisco Halloween 2012 Events and Parties

Halloween 2012 may fall on a Wednesday this year, but that just means you have two weekends to celebrate the holiday with a ton of massive music events, nightclub parties and costumed fun in San Francisco. From the Night of the Living Bass at Mighty to Spookfest at Oracle Arena, we've rounded up the best Halloween events so all you have to worry about is your costume.
Los Angeles Halloween 2012 Events and Parties

Halloween in Los Angeles... There's just no place like it. It's never too early to start planning your annual Halloween debauchery, but with so many awesome Halloween events in Los Angeles 2012, picking the the best places to don your funny/sexy/scary/stupid/offensive costume creation can be tough. Have no fear, MetroWize is here to provide you with the ultimate list of Halloween festivities in LA.
Las Vegas Halloween 2012 Events and Parties

Looking to get wild this Halloween? Make a trip to the Las Vegas for some of the spookiest events and most epic parties of 2012. From nightclub bashes to massive Halloween blow-outs, we've rounded up the best events in Vegas for anyone looking to celebrate the holiday in style.
San Diego Halloween 2012 Events and Parties

Halloween in San Diego is always a frightfully good time, with the city's nightclubs, music venues and party hotspots hosting spooky events, bar crawls and concerts. From the Gaslamp to Pacific Beach, we've rounded up the wildest Halloween 2012 celebrations in San Diego so you can focus on your costume.