This is what I have been doing with my life for the last 5 weeks. It is a series of stacked images taken on the Nikon A1R confocal microscope.

You are looking at the inside of a cell. The red dots are compartments called lysosomes (which inside have enzymes that degrade things), the larger green dots are called autophagosomes (which 'eat' bits of the cell and bring them to the lysosomes for degredation). The faint green blob is the nucleus, this is where the cells DNA is kept.

I personally find it really amazing that we can see inside the cell, and see these compartments moving about which are smaller than 1 micrometer (0.001 mm) in diameter!! Considering you can't even see these cells with the naked eye, and here are the contents of the cell, just stunning. At least in through my eyes.