Halloween is one week from today, and many of the city's biggest parties are happening this weekend. Do you know what you're doing yet? If not, check out our Halloween calendar for more than 250 ideas.

Our calendar is sortable by date (starting today and running through October 31), category (including concerts, haunted houses, performances, and parties), neighborhood, and venue. There's also a filter for our critics' picks.

You can also check out our lists of the 36 biggest Halloween parties to buy tickets for, 29 ghost tours and haunted houses, and 26 festive, autumnal events. Stay tuned to this page for even more lists of Halloween events.

We've done our very best to scour the internet for every last costume party, but more events are popping up all the time, so we'll continue to update our Halloween calendar this week. If we're missing something in particular, you can use this form to let us know!