Wood and gas-burning fireplaces both have their benefits and drawbacks. For example, wood-burners have to sport chimneys, so they're taller. Plus, they tend to be larger in the hearth area because they have to hold logs. Plus, they emit more heat than gas-burners. However, when it comes to outdoorsy authenticity, wood-burners are the front-running choice.
By comparison, gas fireplaces feature exhaust vents, which take up less space than the standard chimney. However, a gas line is required for functionality, which can be pricey and require maintenance by a professional. On the upside, gas burners are easier to light and use than their wood-burning counterparts.