Moravia Wine production in the Czech Republic centers on southern Moravia, particularly around the river Dyje. Four wine growing sub-regions (Czech: Vinařská podoblast) are located here, each named after a major town or region. These sub-regions are: Wine production intertwined with the local culture made Moravia a key wine tourism destination in Czech Republic. Established in 1999, Moravian Wine Trail is a unique project designed to protect cultural heritage and encourage further development of wine tourism in the region. The trail covers almost 300 towns and villages in the Moravian region inter-connected by a network of cycling routes. The Czech National Wine Centre and Wine Salon of the Czech Republic in Valtice Castle are located in Moravian wine country. Bohemia Bohemia is home to a relatively tiny collection of vineyards that are among the most northerly in Europe. They are situated around 50° north latitude, the same as Wiesbaden in the Rheingau. Two defined wine-growing subregions are located in Bohemia: Small vineyards can be found in Prague, but they do not produce a significant amount of wine. The top five grape varieties grown in Bohemia are Müller-Thurgau (26% of vineyards), Riesling (16% of vineyards), St. Laurent (14% of vineyards), Blauer Portugieser (10% of vineyards), and Pinot noir (8% of vineyards). Largest wine municipalities As of 2018, the following wine municipalities were the largest: Grape varieties The most commonly grown grape varieties in the Czech Republic, including the approximate percentage of wine produced for each variety, are listed below: Wine festivals The wine-producing areas of the Czech Republic are well known for their wine festivals (Czech: vinobraní) which take place around harvest time in September. The biggest of these festivals in Znojmo, Mikulov, Brno and Mělník will feature samples of hundreds of local wines as well as local music, dancing and cuisine. These wine-festivals take place in big towns apart from the wine-producing areas as well (such as Prague). Classification Czech wine law classifies wine according to the origin of the grapes and the ripeness of the grapes determined by measuring the must weight in the grape juice at the time of harvest. Sugar content is expressed in units of °NM on the Czecho-Slovak Normalised Must-Weight Scale (Czech: Normalizovaný moštoměr), which indicates how many kilograms of sugar are contained in one hundred litres of grape juice. One degree on the NM scale is equivalent to one kilogram of natural sugar in