He took part in the excavations at Olympia in 1878, became an assistant in the Berlin Museum in 1880, and professor at Berlin (1884) and later at Munich.
Excavations were made on its site in 1811 by Baron Haller von Hallerstein and the English architect C. R.
Excavations on the site of Ostia were only begun towards the close of the 18th century, and no systematic work was done until 1854, when under Pius IX.
What are perhaps the remains of the UTOa (3avtXuc17, in which the Archon Basileus held his court and the Areopagus Council sat in later times, were brought to light in the winter of 1897-1898, when excavations were carried out on the eastern slope of the " Theseum " hill.
The many important objects found in these excavations are preserved in the local museum.