Raising of Chicago – Wikipedia

One of the most interesting Civil Engineering projects:

During the 1850s and 1860s engineers carried out a piecemeal raising of the level of central Chicago. Streets, sidewalks and buildings were either built up or else physically raised up on jacks.

Raising of Chicago – Wikipedia, the free encyclopedia

via Quora

The Death Star could use this

Ever wondered what would happen if a 100 meter diamond travelling at 99.99999999999999999999951% of the speed of light collided with the earth?

The momentum would be enough to knock the Earth into a different orbit—but the Earth is no more. The energy deposited is ten thousand times greater than the planet’s gravitational binding energy, and the planet is blown into an expanding cloud of plasma, with a particularly energetic streamer extending away from the far side of the impact site, out into space.