In the Eifel Region of Germany, not far from Bitburg is an Amusement Park and Zoo, called the Eiflepark Gondorf. Our son and I went on Memorial Day. What impressed us most was the Luge. This is like an individual self controlled Rollar Coaster. The first time Bob went down he exclaimed, "The person who invented this is a genius!" (He normally hates Rollar Coasters)
