Burgruine, Castle ruin in Aub, Germany.

Reichelsburg stands on elevated ground near Aub, with remains of walls, towers, and fortified structures from the medieval period. The stone construction shows how such fortresses were built to oversee the valley and surrounding territories below.

First mentioned around 1230 as "Reigirberc", a fief of Bamberg held by the Hohenlohe-Brauneck brothers. In 1521 Katharina von Königstein sold the Weinsberg share to Prince-Bishop Konrad von Thüngen for 49,000 guilders. On 22 April 1525 rebellious peasants plundered and partly destroyed it; from about 1750 it stood empty and locals quarried its stone until 1900, when the Aub beautification society began securing the ruin.

Since 1996 the Musikgemeinschaft Baldersheim-Burgerroth has held the Reichelsburgfest here every year, reviving the festivals that Aub clubs staged on the ruin in the 1950s. The association also helps maintain the site and built the Truchsessbrücke in 2000, named after the Truchsess von Baldersheim, who served as Amtmann on the castle.

The site sits on a hill outside town and is accessible by marked walking paths from Aub. Access is straightforward, though there are no visitor centers or extensive facilities on site.

The 23.5-metre bergfried, its walls 2.5 metres thick, still stands on the east side behind a ten-metre shield wall. Inside the courtyard a masonry well descends 15 metres. The access bridge of 2000, the Truchsessbrücke, was built on the foundations of the former drawbridge.