Hornburg, Mountain summit in Schwangau, Germany.

Hornburg is a 1,172-metre summit in the Ammergauer Alpen, standing on the municipal land of Schwangau as a spur below the Tegelberg. Its highest point is reached on foot and gives a view of Neuschwanstein Castle. Just below the summit lie a paraglider landing field, a model-aircraft site and two drag lifts, the Adler- and Falkenlift.

On the summit of the Hornburg there was a section fortification in prehistoric and early historic times; the area is listed as a Bodendenkmal in the Bavarian monument register. On the northeast side, near the Kälberwäldleweg, overgrown former quarries were worked from 1945 to 1960, extracting Hierlatzkalk as red marble and light Wettersteinkalk as building stone. They are now designated a geotope by the Bavarian State Office for the Environment.

The quarries on the northeast side, near the Kälberwäldleweg, were worked from 1945 to 1960, yielding Hierlatzkalk as red marble and light Wettersteinkalk as building stone. They are now overgrown and registered by the Bavarian State Office for the Environment as a geotope, so walkers pass former stone-working ground.

The hike starts at the Tegelbergbahn station near Pöllatbrücke with marked forest paths and mountain trails. Visitors should wear sturdy hiking boots and have sure footing, as the trail becomes steeper and more demanding in the upper sections.

On the summit of the Hornburg are the remains of a prehistoric and early historic section fortification, listed as a Bodendenkmal in the Bavarian monument register. Just below the mountain lie a landing site for local hang-glider and paraglider pilots, a model aircraft field, and two tow lifts belonging to the Tegelbergbahn, the Adlerlift and Falkenlift.