Complex sentence: The main collection of the museum consists of donations made in the 19th century: unusual items from the nature and other objects from foreign countries as well as exotic souvenirs brought to Raahe by sailors.
Split into simpler sentences: The main collection of the museum consists of donations made in the 19th century. These include unusual natural items and other objects from foreign countries, as well as exotic souvenirs brought to Raahe by sailors.