In 1852 , he took a trip to Egypt with the travel writer Alexander Ziegler .
Nikolaus attended the Akademische Gymnasium and spent the revolutionary years of 1847 - 48 with his brother Michael at the residence of the Austrian Ambassador Anton von Prokesch - Osten in Athens .
In 1852 , Nikolaus took a trip to Egypt with the travel writer Alexander Ziegler .
Nikolaus attended the Akademische Gymnasium and spent the revolutionary years of 1847 - 48 with his brother Michael at the residence of the Austrian Ambassador Anton von Prokesch - Osten in Athens .