Orbit of Mercury (schematic) (link)

Schematic of Equivalence Principle (link)

Gravitational bending of starlight (schematic)  (link)
Another schematic of bending of starlight (link)

Schematic of Gravitational lens (link)


Figures (and words) from a lecture by Dr Rick Pogge of Ohio State (link)

Picture of an Einstein Ring (link)

An astronaut playing in weightlessness (link)

Nonabsoluteness of simultaneity (link)

Another test and explanation of general relativity (signals from distant spacecraft) (link)

Curved space near a black hole (link)