Billund is world-famous as the birthplace of Lego and the home of the original Legoland theme park, the Lego House, and Lalandia. As a town that exists almost entirely to serve family tourism, it is one of the safest places you can visit in Europe. Crime is virtually non-existent. The massive resort areas are highly secure, heavily staffed, and designed specifically for child safety. The main concerns here are simply keeping track of your children in the massive crowds during peak summer months, and ensuring you have appropriate sun protection and hydration during long days exploring the outdoor parks.