upload.wikimedia.org/wikipedia/commons/thumb/a/ab/

File:Mona Lisa, by Leonardo da Vinci, from C2RMF retouched.jpg - Wikipedia

File:Armoiries de Salm 2.svg - Wikimedia Commons

File:Logo-ubuntu cof-orange-hex.svg - Wikimedia Commons

File:Female reproductive system.svg - Wikimedia Commons

File:Flag of the UNIA.svg - Wikipedia

Finding Images on Wikimedia Commons – Finding and Using Openly Licensed Images: A Quick Guide for Students

Heart - Wikipedia

File:Deutscher Bund.svg - Wikipedia

File:Flag of Portugalicia.svg - Wikimedia Commons

File:Human Trafficking.jpg - Wikipedia

File:Patates.jpg - Wikipedia

File:Albert Einstein Head.jpg - Wikipedia

A global commons: turning research into educational material with Wikimedia – Leeds University Libraries Blog