Barolo is a small town in Piedmont.
Barolo is walkable.
Barolo is a world famous wine city. It is the namesake city for the "king of wines and the wine of kings" of the same name.
Taste wine. Taste more wine. Buy wine.
There in an enoteca in the basement of the Castello. You can't miss the Castello - it's the castle at the top of the hill. This enoteca has a lot of local wines from recent vintages. The opening hours are irregular, so you should check in advance before going there to taste.
There is a web page (in Italian) for the city.