Adventure travel is definitely a style of travel that means different things to different people.
Some travellers think adventure travel involves some kind of extreme activity or thrill seeking. This can be something like rock climbing, mountain biking, kayaking, hiking, spelunking and diving in exotic and sometimes hard to reach locations.
Other travelers think of adventure travel as leisurely, educational and while they might see a little light hiking, walking or cycling, they don't involve dangerous and extreme physical activity. Culinary and wine tours, safaris, nature hikes, wellness activities, architectural and historical tours as well as religeous pilgirmages are all different typers of activities that are might be considered adventure travel also.
Then we have travellers who think something in between is the perfect type of adventure travel.
Regardless of what type of traveler you are, we have something that suits your idea of what adventure travel might be!