Alpha Regio (Venus)
First letter in Greek alphabet.
Regio is a region of the planet Venus extending for about 1500 kilometers centered at 22°S, 5°E. (wikipedia entry)
A regio is a large area marked by reflectivity or color distinctions from adjacent areas, or a broad geographic region. On Venus they are named after giantesses and Titanesses (also two Greek alphanumeric).
Image Source. Marker locations are approximate and may not always appear to align with image on map.
Alpha Regio
-25.5° N 0.3° E