We present an endstation suited for high resolution x-ray imaging based on a modular concept. One to three cylindrical vacuum chambers can be placed on an external rail system in variable distances to each other, while an internal optical rail system can carry up to five x-y-z-motion stages per chamber, each having 50 mm travel range in x- and y- and virtually infinite in z-direction with a position accuracy better than 100 nm. The piezo-driven stages will for a particular experiment be equipped with optics, filters, detectors, specimen or other components needed. The endstation can be configured for full-field x-ray microscopy (TXM), scanning transmission x-ray microscopy (STXM), x-ray fluorescence microscopy, ptychographic and x-ray holographic setups and other experiments that may be of scientific value to the user. The STXM setup already allows imaging the specimen under investigation in different image modes, like bright field, phase contrast, differential phase contrast and dark field. In first experiments, a full-field transmission x-ray microscope was set up at beamline P04 at PETRA III . With this setup we demonstrated imaging of structures in the sub-50 nm range. Furthermore, the microscope was used for imaging the magnetic orientation of nano-structured materials utilizing the x-ray magnetic circular dichroism (XMCD) contrast with temporal resolution, allowing for observing the evolvement of magnetic domains on nm-space and ns-time scale [1, 2].