The task of the X-ray beam transport systems at the European XFEL is to deliver X-ray radiation from undulators to experiments. Located in underground tunnels, the up to 1 km long X-ray transport systems have to separate the X-ray free-electron laser (FEL) beam from its high energetic radiation background, bring it to a usable size, and—for some of the experiments—limit its bandwidth by monochromators. The poster shows the conceptual design of the SASE1, SASE2, SASE3 beamlines, making special emphasis on the mirrors system to be included which are the most sensitive components to be affected with carbon contamination issues as it has been already reported.