Altena is located in Germany (Regierungsbezirk Arnsberg, North Rhine-Westphalia) and time zone Europe/Berlin.
Places nearby are Nachrodt-Wiblingwerde, Werdohl and Neuenrade.
Cologne is 70 km away, Frankfurt am Main is 153 km away and Stuttgart is 301 km away as the crow flies.
Distances from Altena to the most important cities in Germany and the world.
51.2947200°
7.6733700°
Stadtteil of Clausthal-Zellerfeld in Lower Saxony, Germany
https://en.wikipedia.org/wiki/Altenau,_Lower_SaxonyFormer castle in Almkerk
https://en.wikipedia.org/wiki/Altena_Castle_(Almkerk)