Then pick up a copy of the Writer's Market. It's published every year by Writer's Digest, and contains thousands of listings for magazines that hire freelance writers. You'll find listings in every imaginable category. Yep, that too. There's a market for just about any subject you could possibly want to write about.
Magazines seek submissions of all lengths and types.
If you're new to freelancing, you may want to try to place a few short pieces before you try to sell feature length articles. If you've heard the rumor that websites don't pay well, ignore it. Each offers several new listings every week, complete with contact information and guidelines. For both magazines and websites, the proper method of approach is via a query letter. Rather than sending the completed article, almost all editors prefer that you first send a short letter that explains what you want to write, why it's right for them, and how you are qualified to write it.