Although it has been populated since Palaeolithic times, its name derives from the Roman Thermeda. After the Romans came the Visigoths, who introduced new crops which prospered thanks to the Arabs and their irrigation systems, still preserved today. Alfonso VI expelled the Arabs. In the XVI century Tielmes received the title of Town. It is surrounded by fertile lowlands, the River Tajuña basin, tributary and point of convergence of the Vega and Valdecañas streams. This is river-bank countryside, with kitchen gardens and a landscape of olive trees; oil tasting is a tourist attraction.