Find those magazines on newsstands, on the internet, on a friend's coffee table. Almost all special interest magazines are hungry for stories with a travel focus that addresses the magazine's stated purpose, e.g. antiques, chocolate, glass collecting, railroading, whatever. Regional magazines are another break-in travel market. Many states, cities, recreational regions put out magazines aimed to attract tourists or promote local business. Sometimes the state economic and development commission has a hand in producing those magazines.
Local writers have an edge.
Remember that regional travel magazines come and go rapidly. Evaluate the magazine's finances carefully before sending a query or working on a story. Send a smart query about a place within the scope of the magazine's stated objective, then follow up with a phone call and have three other ideas you can discuss casually. Show how you know the region. Scale back your expectations.