Schloss Hochhaus, Castle building in Vorchdorf, Austria.

Schloss Hochhaus is a three-storey building at Schlossplatz 1 in Vorchdorf, essentially the original 15th-century Vischpekch structure. Its gable wall was raised with a round-arch frieze (Maschikulis) and given a hipped roof, and the entrance portal dates from the Rococo period around the mid-18th century. The surviving wall tower, the "Fischerturm", now houses the local heritage museum.

Chunrat der Vischpekch, steward at Eggenberg, built the seat between 1454 and 1462. The Fernberger family held Vorchdorf from 1532 until 1618, when it passed to Gregor Händl; in 1654 Count Hanns Ludwig von Kuefstein bought it, and his son sold the castle to Stift Schlierbach in 1660. The municipality of Vorchdorf acquired it in 1871.

The name Hochhaus refers to the elevated site, not to fishing; the Vischpekch family, builders of the seat between 1454 and 1462, took their name from Fischbach. Since 1891 the building has housed an inn: the first tenants were Franz and Theresia Hörach, and Rudolf and Pauline Hillinger are the present hosts.

Schloss Hochhaus stands at Schlossplatz 1 in Vorchdorf. The building has housed a tavern for around a century, run since 1960 by Franz and Maria Ziegelböck and now by Rudolf and Pauline Hillinger. The Neptunbrunnen fountain in front of the castle came from Stift Schlierbach.

The 1674 copper engraving by Georg Matthäus Vischer shows the castle with a surrounding wall, a corner tower with an onion dome and an attached Meierhof, all demolished in 1911. The surviving wall tower, called the Fischerturm, now houses the local history museum.