The Treaty of Leoben was a general armistice and preliminary peace agreement between the Holy Roman Empire and the First French Republic that ended the War of the First Coalition. It was signed at Eggenwaldsches Gartenhaus, near Leoben, on 18 April 1797 by General Maximilian von Merveldt and the Marquis of Gallo on behalf of the Emperor Francis II and by General Napoléon Bonaparte on behalf of the French Directory. Ratifications were exchanged in Montebello on 24 May, and the treaty came into effect immediately.
On 30 March, Bonaparte had made his headquarters at Klagenfurt and from there, on 31 March, he sent a letter to the Austrian commander-in-chief, Archduke Charles, requesting an armistice to prevent the further loss of life. Receiving no response, the French advanced as far as Judenburg by the evening of 7 April.
Wikipedia https://en.wikipedia.org/wiki/Treaty_of_Leoben
Address 26 Mühltaler Straße, Leoben 8700, Austria
Coordinates 47°22'41.413" N 15°5'51.778" E