Public domain
View of Stolzenfels Castle, from presumably Koblenz
From the collection of Rijksmuseum, Amsterdam. Free to download, adapt and use — no permission needed.
Credit lineGezicht op het Slot Stolzenfels, vanuit vermoedelijk Koblenz. c. 1855 - in or before 18. Francis Frith. Rijksmuseum, Amsterdam. Public domain.