I just came home from a week in Colorado. We had dinner at the Swiss Chalet Restaurant located in the Sonnenalp Lodge for my birthday. It was terrific. Excellent food, service, and atmosphere. Everything was authentically European, and it made for a very fun evening.
About 10 years ago I went to a place called the Minturn Country Club. You cook your own steaks there (which of course you also purchase there). It was a lot of fun, and the steaks were pretty good too.