Cricova is the Grand Duke of Moldovan wineries. Its underground wine kingdom is one of Europe's biggest, with 120km (74mi) of labyrinthine roadways, 60 of which are used for wine storage. Up to 100m (328ft) under ground, the 'cellars' hold 1.25 million bottles of rare wine. You must be in private transport and have advance reservations to get into Cricova.