Eischen (Luxembourgish: Äischen) is the largest town in the commune of Habscht in south-western Luxembourg, and its administrative centre.
Surrounded by forests on all sides, it borders to the east on the small town of Hobscheid, with which it forms an administrative unity, to the south-east, a road leads to the town of Steinfort, to the south and west, it borders on the Belgian Province de Luxembourg and to the north lies the small hamlet of Gaichel.
The river Eisch runs through the centre of town from west to east, approximately following the road to Hobscheid.
In the first centuries AD, the Romans established a fortified settlement a few kilometres west of Eischen, across the border to Belgium in the area which is now known as Clairefontaine.
During the following centuries, property rights concerning the extended forests between Eischen and Clairefontaine were a source of constant quarrel between the town inhabitants and the monastery.
The main entrance portal, reminiscent of the neo-romance architectural style, is crowned by a relief representing Saint Peter as keeper of the keys to Heaven.