Karlovy Vary is a spa town situated in western Bohemia, Czech Republic, on the confluence of the rivers Ohře and Teplá, approximately 130 km (81 mi) west of Prague (Praha). It is named after Charles IV, Holy Roman Emperor and King of Bohemia, who founded the city in 1370. It is the site of numerous hot springs (13 main springs, about 300 smaller springs, and the warm-water Teplá River), and is the most visited spa town in the Czech Republic.

In the 19th century, Karlovy Vary became a popular tourist destination, especially known for international celebrities who visited for spa treatment. The city is also known for the Karlovy Vary International Film Festival, which is one of the oldest in the world and one of Europe's major film events.

It is also known for the popular Czech liqueur Becherovka and the production of the famous glass manufacturer Moser Glass, which is located in Karlovy Vary. The famous Karlovarské oplatky (Carlsbad wafers) originated in the city in 1867. It has also lent its name to "Carlsbad plums", candied stuffed zwetschgen.

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