Canton of Diekirch

Medernach (Luxembourgish: Miedernach) is a town and commune in eastern Luxembourg. It is part of the canton of Diekirch, which is part of the district of Diekirch. Since 2011, Medernach has merged with Ermsdorf to become the "Aerenzdallgemeng" (commune Vallée de l'Ernz, Ernztalgemeinde).

Larochette Castle (Luxembourgish: Buerg Fiels, German: Burg Fels, French: Château de Larochette) stands high above the town of Larochette in central Luxembourg. Dating from the 11th century, the castle was destroyed by fire at the end of the 16th century. Since its acquisition by the State of Luxembourg in 1979, some restoration work has been undertaken.

Larochette (French pronunciation: [laʁɔʃɛt]; Luxembourgish: Fiels, German: Fels) is a commune and town in central Luxembourg, in the canton of Mersch. It is situated on the White Ernz river. The town is dominated by the partly ruined Larochette Castle. The town of Larochette lies in the north-east of the commune. Other towns within the commune include Ernzen. Meysembourg Castle, located some 2 kilometres (1+1⁄4 mi) south-west of Larochette, has a history dating back to the 12th century. Today's castle was built in 1880 in Neo-Renaissance style and is privately owned.

Nommern (Luxembourgish: Noumer) is a commune and small town in central Luxembourg, in the canton of Mersch. As of 2005, the town of Nommern, which lies in the east of the commune, has a population of 262. Other towns within the commune include Cruchten and Schrondweiler.

Vallée de l'Ernz (Luxembourgish: Ärenzdall) is a commune in northern Luxembourg, in the canton of Diekirch. The commune of Vallée de l'Ernz was formed on 1 January 2012 from the former communes of Ermsdorf and Medernach. The law creating the Vallée de l'Ernz was passed on 24 May 2011. It has an area of 39.73 km2.

Meysembourg Castle (Luxembourgish: Schlass Meesebuerg; French: Château de Meysembourg) is located some 2 km south-west of Larochette in central Luxembourg. While the site has a history dating back to the 12th century, today's castle was built in 1880 in Neo-Renaissance style and is privately owned.

Schrondweiler is a village in the commune of Nommern, in central Luxembourg. The village has a population of 403. The stream Schrondweilerbaach is crossing the north-eastern part of the village.

Ermsdorf (Luxembourgish: Iermsdref) is a village and former commune in eastern Luxembourg. It is part of the canton of Diekirch, which is part of the district of Diekirch. As of 2005, the village of Ermsdorf, which lies in the south of the commune, has a population of 221. Since 2011, Ermsdorf has merged with Medernach to become the "Aerenzdallgemeng" (commune Vallée de l'Ernz, Ernztalgemeinde)

Ernzen (Luxembourgish: Ierenz) is a small village in the commune of Larochette, in central Luxembourg. As of 2023, the town has a population of 536.

Heffingen (Luxembourgish: Hiefenech) is a commune and small town in central Luxembourg, in the canton of Mersch. As of 2005, the town of Heffingen, which lies in the centre of the commune, has a population of 598. Another town within the commune is Reuland. Heffingen is where Loschbour man, a homo sapiens of over 8000 years old, was found.

Stegen (Luxembourgish: Steeën) is a village in the commune of "Aerenzdallgemeng", in eastern Luxembourg. The village has a population of 504. The Saint Bartholomew church of Stegen was classified as a national monument in 2021. The stream Tirelbaach is flowing through the eastern part of Stegen. Stegen is home to the goat farm Bio Baltes in Um Suewel. It produces goat cheese for a large number of supermarkets throughout Luxembourg.

Angelsberg (Luxembourgish: Angelsbierg) is a small town in the commune of Fischbach, in central Luxembourg. As of 2005, the town's population is 283.