Vallendar is a town in the district Mayen-Koblenz, in Rhineland-Palatinate, Germany. It is situated on the right bank of the Rhine, approx. 4 km north-east of Koblenz. Vallendar is the seat of the Verbandsgemeinde ("collective municipality") Vallendar.
The town of Vallendar spreads out on the right side of the Mittelrhein opposing the island of Niederwerth, where several creek valleys from the Westerwald meet the Rhine valley. It is situated 5.7 km (3.5 mi) north of Koblenz and 12.3 km (7.6 mi) south of Neuwied. East of Vallendar rises the Westerwald, on the other side of the river the Eifel.
The town's name derives from its situation in the creek valleys. The syllables "val" and have Indo-Germanic roots: "val" means "flowing", whereas "ndar" indicates a "swampy area".
Vallendar is first mentioned around 830–840 AD as the property of the Archbishop of Trier; it was probably, however, of Celtic origin and a lot older (700–600 BC). In 1143 Schoenstatt Abbey was founded. In 1232 the Count of Sayn took possession of the land and began building a castle at the northern edge of the town in 1240. Its foundations today support the Marienburg.
Vallendar is a Verbandsgemeinde ("collective municipality") in the district Mayen-Koblenz, in Rhineland-Palatinate, Germany. The seat of the municipality is in Vallendar.
The Verbandsgemeinde Vallendar consists of the following Ortsgemeinden ("local municipalities"):
Coordinates: 50°24′00″N 7°37′01″E / 50.400°N 7.617°E / 50.400; 7.617