Last Monday we did a fun family hike. Matt and I like hiking as long as there's a payoff, so we pretty much only do trails where there's a view or a waterfall. Minnehaha Falls was perfect for us, since we had Matt's parents along too. It's about a 1/2 mile in and out - 1 mile round trip, and easy walking. (The note there on the railing at the beginning of the trail is misspelled.)
This is the payoff! 60 foot cascade.