Elroy Sparta bike trail is cool for biking and you can stay at the tunnel trail inn campground. Boulder Junction area in Northern WI is one of my fav areas and there are tons of lakes to explore (checkout the Crystal/Firefly lake area). Door County all the way down the lake to Milwaukee, any of the state parks along the lake are worth the stop. Wisconsin Dells has a lot of nature if you look and also a huge tourist area. Mirror lake is the place to stay in that area and for one of a kind supper club stop at Ishnala. Summerfest may be going on in Milwaukee and if music is your thing it might be right up your alley. I'm out exploring the area just about every weekend so if you have any other ? let me know. Also I post a bunch on Instagram Van_Camp_WI and you can see some pics there of the above places.