Which desert in Almeria, Spain, is often described as mainland Europe's only desert?

The desert in Almeria, Spain, often described as mainland Europe's only desert is the Tabernas Desert.

Tabernas lies in southeastern Spain, roughly 30 kilometres north of the city of Almeria, in Andalusia. Its dry basin is enclosed by the Sierra de los Filabres, Sierra Alhamilla and Sierra Nevada, which help block humid Mediterranean air and create an unusually arid climate.

The landscape is famous for sharply eroded badlands, gullies and sparse vegetation rather than endless dunes. Much of the area receives little rain, although its annual total can exceed 220 millimetres—one reason the phrase “Europe's only desert” is best understood as a popular description rather than a completely uncomplicated scientific label.

Tabernas became a major filming location for westerns and other productions, including many so-called spaghetti westerns. Film sets and desert scenery still attract visitors, while the surrounding 280-square-kilometre area is protected as a natural area.

It is sometimes confused with the Bardenas Reales of northern Spain, a semi-desert landscape. Tabernas is the standard answer for this Almeria-based trivia question.