If your trip to Lindlar is all locked in but your itinerary is a little on the empty side, let us give you a helping hand.Plan a stop at Heiligenhoven Castle. It's one sight you'll usually find on most travelers' must-do lists. If you still have some room on that travel itinerary, Jubilate Kirche and Dreifaltigkeitskapelle Unterheiligenhoven will keep you on the go too.