There is a stone tumulus on the northern headland of Lindos bay, which is sometimes called the Tomb of Cleobulus. Cleobuluswas a Greek poet and a native of Lindos in the 6th century BCE.
Cleobulus was the son of Evagoras and a citizen of Lindus in Rhodes. Clement of Alexandria called Cleobulus king of the Lindians, and Plutarch spoke of him as the tyrant. The letter quoted by Diogenes Laërtius, in which Cleobulus invites Solon to Lindus as a democratic place of refuge from the tyrant Peisistratus in Athens, is undoubtedly a later forgery. Cleobulus is also said to have studied philosophy in Egypt. He had a daughter, Cleobulina, who found fame as a poet, composing riddles in hexameter verse. Cleobulus is said to have lived to the age of seventy, and to have been greatly distinguished for strength and beauty of person.
Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.