Curator’s inspection
Move across the painting — or drag on touch — to study brushwork and craquelure through the curator’s loupe.
The Trinity
Three angels at Abraham's table, arranged in a circle of silent communion — the summit of Orthodox iconography.
Depicts the Hospitality of Abraham (Genesis 18), read in the Eastern Church as a figure of the Trinity.
Icons are not illustrations but windows: the reverse perspective draws the viewer into the circle at the open fourth side of the table.
The Stoglav Council of 1551 named it the model for all Trinity icons.
Source: Wikimedia Commons. Public domain work; reproduction licence as listed at source.