The Czech Republic's most famed spa destination, Karlovy Vary - or Carlsbad - saw 200 spa houses sprout by the end of the 1500s. The springs in this idyllic, lush, peaceful Tepla valley are said to cure an almanac's worth of metabolic and gastric issues. Visitors still flock to this town of Baroque and Art Nouveau buildings. Five beautiful Colonnades straddle hot springs where visitors try aquatherapy and drink the mineral-rich water. The town also has a respected international film festival.