Poptaslot or Heringastate is a stins—a type of luxurious house often used by and/or built for the nobility of Frisia,[1] many of which are built to look like castles (the term literally means "stone-house"[1])—in the Dutch province of Friesland (Fryslân).[2] It was founded somewhere between 1512[3] and 1525, probably by Sasker van Camstra.[4] It was probably named Heringastate when it was founded, using his mother’s surname Heringa.[4] Around 1631 it was significantly changed and modernised.[3] Its last inhabitant, Doctor Henricus Popta, declared that his house should never be lived in again[5] and should be preserved. Today slot guardians (Dutch: slotvoogden), of which four are currently active, still preserve the stins.[5]
It is located in the village of Marsum, near the provincial capital of Friesland, Leeuwarden, and is listed as rijksmonument number 28623.[6]