(What are those header images?)

Cur­rent header images:

Albrecht Dürer - Study of Drapery
Albrecht Dürer - Study of Drapery
ella guro - obscured static
Richard Moult - Et in Arca­dia Est
Isaac Levitan - Spring in Italy (1890)
Isaac Lev­itan - Spring in Italy
Richard Moult - Fantasy Without Wan­derer
Remedios Varo - [Unknown]
Zeno van den Broek - Narkomfin II [detail]

Plus sev­eral his­tor­ical / open source / edited images.