The square truncated pyramidal base, still visible, comes from following French projects.
The Hohenstaufen castle, of which there are only buried fragments, was inside this tower, an outward complex that rose three floors.
The castle was built around a central square courtyard.
The courtyard at the third floor instead presented an octagonal shape, characteristics that resemble very closely the most famous structure built by Frederick II in the area: Castel del Monte.

The Swabian castle had a normal entry at street level.
The surrounding French base has no access to the street level, so was raised the question of how it was possible to access it.
It has been assumed that the entry was made possible by the presence of ladders downed from above, while the most evocative hypothesis (supported by the discovery of tunnels near the castle) suggests the access from an underground entrance.
The absence of a doorway, however, is significant of the strategic importance of the castle, which in this way was more difficult to conquer.

A circular 14-meter-deep cistern located under the courtyard guaranteed the water to the castle.

The irregular wall that surrounds the entire hill on which stands the castle is 900 meters long, and also consists of 13 square towers, two pentagonal bastions, 7 buttresses and two cylindrical corner towers.
The latter - with regular section of great precision - were with certainty part of the Frederick's project for Lucera.
Even access to these walls - with the bridge over the big dig - reminds the Swabian castles in the homeland of the Emperor, such as the castle of Wildenstein, which has a similar entry.
The square truncated pyramidal base, still visible, comes from following French projects. The Hohenstaufen castle, of which there are only buried fragments, was inside this tower, an outward complex that rose three floors. The castle was built around a central square courtyard. The courtyard at the third floor instead presented an octagonal shape, characteristics that resemble very closely the most famous structure built by Frederick II in the area: Castel del Monte.
The Swabian castle had a normal entry at street level. The surrounding French base has no access to the street level, so was raised the question of how it was possible to access it. It has been assumed that the entry was made possible by the presence of ladders downed from above, while the most evocative hypothesis (supported by the discovery of tunnels near the castle) suggests the access from an underground entrance. The absence of a doorway, however, is significant of the strategic importance of the castle, which in this way was more difficult to conquer.
A circular 14-meter-deep cistern located under the courtyard guaranteed the water to the castle.
The irregular wall that surrounds the entire hill on which stands the castle is 900 meters long, and also consists of 13 square towers, two pentagonal bastions, 7 buttresses and two cylindrical corner towers. The latter - with regular section of great precision - were with certainty part of the Frederick's project for Lucera. Even access to these walls - with the bridge over the big dig - reminds the Swabian castles in the homeland of the Emperor, such as the castle of Wildenstein, which has a similar entry.
Lucera Castle