Martian Tripods

They are extremley tall attack robots controlled by Martian alien pilots.

They also have heat lasers that can vaporize any biological earth life form within a second. Their average height ranges from 190 to 220 feet!

Info
According To H.G Wells‘ original novel, they arrived on earth from mars in 1898 CE. They then caused havoc to the kingdoms and nations of Europe until they were finally destroyed by infections from Earth-native bacteria.