sehenswert
worth seeing
So interesting, beautiful, or remarkable that it is worth seeing or visiting.
Die Altstadt von Prag ist wirklich sehenswert.
Prague's old town is really worth seeing.

worth seeing
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worth seeing
So interesting, beautiful, or remarkable that it is worth seeing or visiting.
Die Altstadt von Prag ist wirklich sehenswert.
Prague's old town is really worth seeing.

The word is composed of the verb 'sehen' (to see) and the adjective 'wert' (worth). It literally means 'worth being seen'. This structure is also found in other words like 'lesenswert' (worth reading) or 'bemerkenswert' (remarkable).
Dieses Buch ist wirklich lesenswert.
This book is really worth reading.
'Sehenswert' (worth seeing) is typically used to recommend places or things that one should see. Common combinations are 'eine sehenswerte Stadt' (a city worth seeing), 'ein sehenswerter Film' (a film worth seeing), or 'eine sehenswerte Ausstellung' (an exhibition worth seeing).
Das neue Museum ist besonders sehenswert.
The new museum is especially worth seeing.
You can use this adjective in two ways: predicatively after a verb like 'sein' (to be), or attributively directly before a noun. In both cases, it is used for description or recommendation.
Die Ausstellung ist sehr sehenswert.
The exhibition is very much worth seeing.
interesting
'interessant' and 'sehenswert' can both speak positively about things that deserve attention. 'interessant' is very general: a book, a topic, a conversation, or a film can be 'interessant'. 'sehenswert' is used only for something that you can look at or visit, for example a place, a building, an exhibition, or a film. 'sehenswert' also includes the idea that it is worth going there or taking a look at it. If it is not about seeing or visiting something, 'interessant' is the better choice.

Die alte Burg über der Stadt ist wirklich sehenswert.
The old castle above the town is really worth seeing.
Morgen lese ich einen interessanten Artikel über Musik.
Tomorrow I will read an interesting article about music.