Porta Claudia
Coordinates: 47°23′46″N 11°15′54″E / 47.396069°N 11.265115°E
The Porta Claudia is a former fortification at the Scharnitz Pass, where the valley of the River Isar narrows near the village of Scharnitz (Tyrol, Austria), on the Bavarian border near Mittenwald. The Porta Claudia – or more precisely the Scharnitz Pass – is the start of the present federal highways, the B 2 (Germany) and the B 177 (Austria).
In the Middle Ages the Scharnitz Pass belonged to the County of Werdenfels, the border between the County of Tyrol then being located at Schlossberg Castle north of Seefeld. The long-term aim of Tyrol was to push the state border north to the strategically important Scharnitz Pass. The Tyrolese achieved a partial success when, on 20 October 1500, Emperor Maximilian I and Prince-Bishop Philip of Freising ratified a treaty agreed the year before that moved the border of Tyrol to within a kilometre south of Scharnitz.
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