Do :
Make a daily trip to Colmar Tropicale on cloudy days (NOT RAINY DAYS!) to experience French architectural and summer.
Do but Do Not :
Visit the Japanese Botanical and Tea Garden. Not recommended for non-nature lovers or those who are not a fan of steep roads.
Suggestion :
Bring enough money or else, bring your own food but be smart when choosing eating ports because 'picnic' is not allowed.