This charming manor by the lake dates back to the 18th century. It is blue-labeled by the Stockholm City Museum, which means that "that the buildings are considered to have extremely high cultural-historical value".
In the 17th century there was a farm here which belonged to the big estate Långbro and was called Isbergatorpet. The term “torp” was commonly used for the smallest size of farm, paying a quarter of a "full" farm's taxes. In 1779 the ground with the Isbergatorpet was cut off from Långbro and the new area was called Herrängen. The cut covered about 70 hectares and consisted of the meadow land Herrängen and part of Långbro forest. The manor house with surrounding buildings was erected in the following years. The builder was most probably the butcher and captain of the borough's cavalry, Per Djurberg, who leased the land off Långbro farm. The mansion was sold in 1788 to the Chief Executive Martin Tavelin. At that time, the property consisted of, among other things, a manor building with two small wings, a barn, and a cowshed.
The main building and the wings are exceptionally well preserved. Windows with shutters are original from the 18th century, while window coverings, contoured ceilings and the glass veranda are probably from the late 1800s. The interior is also full of original details. The ground floor boasts gustavian ceiling moldings in stucco and chest panels. In the three rooms to the west there are tiled stoves from the late 18th century with pedestals in turned wood and green marble fireplaces. During the renovation in 1958, hidden wallpapers were found. The pattern was reprinted under the name “Herrängstapeten” and now can be seen in the large hall on the ground floor. The doors and door fittings are older than the house itself and must have been moved from another, older building.
Today, the manor houses a cafe and a restaurant (https://www.herrangensgard.se/) with a pleasant outdoor veranda. During summertime you can take a dip in the lake from the pier behind the house.

Sources: Wikipedia, AB Stadsholmen: Herrängens gård (faktablad)