The Engstligenfälle are situated near Adelboden. From there you can travel with public transports to the valley station of the cable car (see link below). We already did both routes to the waterfalls: Walk directly on the ground of the valley, so that you reach them within 20 minutes, or take the cable car and hike down along the waterfalls. The benefit of the second option is that you get to enjoy the upper waterfall more.