Which preposition to use with leoben

in Occurrences 1%

The Austrian Netherlands and the province of Liege were divided into nine departments, forming an integral part of the French republic; and this new state of things was consolidated by the preliminaries of peace, signed at Leoben in Styria, between the French general Bonaparte and the archduke Charles, and confirmed by the treaty of Campo-Formio on the 17th of October, 1797.

Which preposition to use with  leoben