Mileștii Mici Winery, located in Moldova, is famous for its extensive underground wine cellars, holding a Guinness World Record for the largest wine collection. Tours, typically lasting 1-2 hours, guide visitors through the cellars via electric train or car, showcasing the vast collection and offering wine tasting experiences. While solo exploration is possible, guided tours are highly recommended to fully appreciate the scale and history of the winery. The cellars maintain a consistent temperature year-round, so there are generally no seasonal restrictions. Accessibility might be limited in some areas due to the underground nature and potential steps, so it's best to inquire in advance. The cost of a visit varies depending on the tour package and tasting options chosen.