• (Ancient) Egypt
• (ant)arctic explorations
• archeology
• astronomy/astrophysics/astrobiology
• atomic/hydrogen bombs
• ATP tennis
• biology
• bioluminescence
• book (cover) art
• CERN and it's Large Hadron Collider
• Circuses
• classical ballet
• dolphins
• ethnic jewellery/decorations
• feminism
• fencing
• fossils
• genetics
• geometrical structures
• Incan, Mayan and Aztec cultures
• mammoths
• neoclassical architecture
• neuroscience
• Nigella Lawson's cooking books/shows
• opera houses
• photos of snowy sceneries
• Piano's and violins
• quantum physics
• (ruins of) cathedrals and abbeys
• Russia and Russian history
• starling formations
• (sub)atomic particles
• the 1920's
• the Byzantine Empire
• the Crimean War
• the crusades
• the Fibonacci spiral
• the Napoleonic era
• the seed cathedral at Shanghai World Expo
• the Third Reich
• Van Gogh, Kahlo, Schiele and Modigliani
• whalesharks
• WWI
• WWII
• Xavier Veilhan's works of art

to be continued