Mustard lovers: Head to Middleton, Wisconsin. More than 6,000 varieties of mustard are showcased at the National Mustard Museum in this town just outside Madison. Admission is free, though the destination is open only five days a week during the coronavirus pandemic (face coverings are required; capacity is limited). Enter and you’ll encounter shelves groaning with mustards from all 50 states and more than 70 countries, along with displays of antique mustard pots, tins and jars, plus vintage posters and advertisements.