Our annual gourmet tour was in Alsace last year. You can find basics on Wikipedia, like it is between France and Germany, what was the importance of the region in the World War and of course wine.
What you can't find there is how it makes you feel when you walk on its pavements. The ambiance of the streets and the colors are fascinating. Alsace region is full of small medieval towns. Yes, you read it right, medieval. They didn't get affected by wars and all medieval houses stayed same.
Almost every day is like a festival, like a costume festival from the 15th century.
Common Alsace wine is white wine. Most common grapes are Riesling, Gewurztraminer and Pinot Gris. My favorite was Gewurztraminer. It has soft and smooth taste and riched with fruits.
Local food wasn't amazing, to be honest. German influence was so heavy and I am not a fan of poorly cooked pork. Yet, you can find Michelin approved restaurants in almost every corner. They are not so expensive and variety of meals are mouthwatering.
I would say, 3-5 days are more than enough for a decent Alsace tour. A week or more could be boring. We decided to go Italy through Switzerland and the Cote d'Azur after Alsace. If you have more than a week, I strongly suggest you do the same.
my travel buddies, and best friends