Currently, the crisis situation is driving the real estate markets around the world. Mainly in focus are so called, core' real estate investments: the most stable, nicest looking, most rented out and most ideally located investments. With these investments, investors intend to eliminate almost all risks. But are they really able to do so? This book takes a closer look at the asset class and investment strategy, core' and tries to promote a clearer understanding of what, core' really is and what requirements this investment category has to fulfill. Furthermore, a new detention has been developed to narrow down a globally working detention throughout all asset types but mainly focusing on offices exemplified by the London and Frankfurt commercial real estate market. In further chapters, risks around the, core' strategy are analyzed, and the current and past crisis situation's connection with these investments is discussed. This work is intended to help all real estate professionals, such as investors, fund managers, financial experts and all professionals having to do with major, core' real estate investments around the world who would like to get a clearer and more precise comprehension of the matter.