Today I went to see the Diamond Light Source synchrotron. This is a giant particle accelerator that accelerates electrons close to the speed of light and then "wiggles" the electrons via giant magnets to make them emit X rays, which are then directed down side channels to hit whatever you want to examine, for example crystallised proteins.
The x rays pass through the samples and create diffraction patterns from which you can work out the 3d structure.
If you imagine the machine as a huge circle, some of the pictures are taken standing on top of the concrete ceiling slabs protecting humans from the X rays when it's in action. These slabs can be removed by a crane that's built into the building, so if you want to get easy access to underneath you just lift the ceiling out. Basically physics, engineering and science on a massive scale.