Austria's wine regions are known for their unique terroirs and high-quality production. The country is divided into four major wine-growing regions: Niederösterreich (Lower Austria), Burgenland, Steiermark (Styria), and Wien (Vienna). Niederösterreich is the largest and includes notable sub-regions like Wachau, Kamptal, and Kremstal, known for producing some of the finest and age worthy grüner veltliner and riesling wines. Burgenland, with its slightly warmer climate, excels in producing high acid reds using blaufränkisch. Steiermark offers aromatic sauvignon blanc and fresh, crisp white wines, while Vienna holds the distinction of being the only capital city in the world with significant wine production. Each region has its own unique microclimate and soil composition, contributing to the diversity and quality of Austrian wines.