Luxembourg: Chateaux in Luxembourg

There are about 50 castles in Luxembourg which includes fortresses and residential chateaux.  Most of them are from middle ages.  

Thanks to Ms Valerie. She has used two rose stamp from a set of six issued in 2017. On the left is Rose-Grand duke Henery and on the right is Rose- Grand duke Jean. Nice postmark on covid vaccination.

Luxembourg: Casemates du Block

The Bock  is a promontory in the north-eastern corner of Luxembourg City's old historical district. Offering a natural fortification, its rocky cliffs tower above the River Alzette which surrounds it on three sides. Ruins of the old castle and the vast underground system of passages and galleries known as the casemates continue to be a major tourist attraction.

Thanks to Kirstin.

Luxemborg: City of Luxemborg

Because of its strategic position, Luxembourg was, from the 16th century until 1867, when its walls were dismantled, one of Europe's greatest fortified sites. It was repeatedly reinforced as it passed from one great European power to another: the Holy Roman Emperors, the House of Burgundy, the Habsburgs, the French and Spanish kings, and finally the Prussians. Until their partial demolition, the fortifications were a fine example of military architecture spanning several centuries.