Large parts of the original stone walls of the high- to post-medieval castle remain.

The hilltop castle probably goes back to the time of an earlier fortification of counts of Veringen and Nellenburg.

To the south, the large outer bailey was laid out together with its strong, rectangular, advanced tower.

As a result, the Waldburgs mostly lived in the castle by themselves or let had it managed by vogts (1418 Hans von Mühlegg).

For these reasons, in the 16th century, a zwinger was added to the main castle, reinforced by artillery roundels.

In the main castle, two staircase towers were added as well as numerous complicated alterations to make the Trauchburg into representative seat of territorial lordship and government.

From 1991, these measures were coordinated with the Bavarian State Department for Heritage Conservation, the Building Archives of Thierhaupten and the Dr. Zeune Office for Castle Research (Eisenberg).

East of the track lie the foundations of a round tower on the steep mountainside; joined to the north by walls.

The modern wooden bridge over the neck ditch in front of the main castle was built as part of the remodelling in the 16th century.

Despite the involvement of medieval archaeologist, Joachim Zeune, and the State Department for Heritage Conservation, the renovation of the castle ruin is often criticized as being too rustic.