Achstetten Castle is located at an elevation of about 503 m in the southern part of the municipality close to the parish church St Oswald and Agatha, the 18th-century country inn Rössle and the local town hall.

Achstetten Castle is a spacious three-storey building in classicist style with a risalit in its centre.

On three sides the castle is surrounded by a large park, which is home to an enclosure where fallow deer are kept.

Noteworthy of the interior are a classicist staircase, 19th century furniture, an iron stove from 1798, portraits of the Freyberg family and a porcelain collection.

By around 1750 it consisted of an inner yard, surrounded by a large building which contained the stables, a derelict barn and a gate on the ground floor, the granary in the attic and living quarters in between.

[12] During the first half of the 19th century, the pond and the moats that surrounded the previous castle were drained and turned into a park.