In recent years, a surge in tourism has revitalized Croatia's breathtaking beaches and stone-walled medieval cities - and turned the spotlight on Croatia's wines as well. White wines dominate most of the northern regions. Local varietals include Grasevine (Welschrielsing), Grk, Posip, Vugava. and Bogdanusa. The south is known for its red wines from Plavac Mali, Refosco (of Italian origin), Frankovka, and Crljenak Kasteljanski, which is the same as American Zinfandel. The international varieties have become popular as blending components.