Long exposure and probably HDR.
Put you camera on a good tripod, set you camera to manual focus and to shoot raw.
Set your aperture for the DOF - that would be a small aperture (high F number) because you want everything in focus
Set your ISO low to minimize noise
Now start with a pretty slow shutter speed (for example 10 seconds) and take a test picture, if your picture is over exposed use a faster shutter, if you don't get a picture as bright as the examples use a slower shutter.
If you get a single picture you like you will have to post-process it, the white balance will most likely be completely wrong (but that's ok because we shot raw) and for such exaggerated colors you will need to play with the saturation and vivid settings.
If you can't get a single well exposed image (if there are lighted and dark area in the image it's likely you will either over expose the light area or under expose the dark one) - than take multiple images from everything under exposed to everything over exposed at 1 or 2 stop differences (changing just shutter speed) and use HDR software to create a single image from the set.