The novels, poetry, art, film, etc. of a country can tell you a great deal about it. What do people reflect on? How has the past informed the present? What type of art is important to a country?
Everyone loves pictures - they can convey an incredible amount information succinctly and effectively.
Just remember to tell your reader what they're reading or looking at, and why they should care!
Kitagawa, U. (1800) Ebisuko. Japan, 1800. [or 1801] [Photograph] Retrieved from the Library of Congress, https://www.loc.gov/item/2008661145/.