Zengő, Mountain summit in Baranya County, Hungary.

Zengő is a 682-metre summit in the Mecsek range, the highest point of Baranya County. Its slopes are built of Permian sandstone and Jurassic and Triassic limestone. A 22-metre steel lookout tower with 112 steps stands on the summit, and the ruins of the small medieval Zengő-vár lie about a hundred metres away.

The medieval castle on the summit, first surveyed in 1992, probably dates from after the Mongol invasion; its area was 105 by 70 metres, with a three-storey tower 15 metres across and walls 2.5 metres thick. Archaeologists suggest a Roman guard tower may have stood on the same strategic spot, and Kárpáti Gábor found a Roman bronze fibula here in 1994.

The name means 'to resound' in Hungarian, rooted in local stories about treasure seekers whose voices are said to echo through the rock formations. This sense of the mountain as a place where sound carries differently has shaped how people experience and speak about it.

The mountain is reached by marked trails starting from the nearby towns of Pécsvárad and Hosszúhetény, with the T2 route providing a direct path to the summit. Good hiking conditions occur during warmer months when weather is more stable and visibility from the top improves.

The mountain harbors roughly ninety percent of the total population of Paeonia officinalis ssp Banatica, a protected flowering plant found only here in its natural range. This rare species thrives in conditions found nowhere else nearby and makes the summit botanically significant.