Smederevo Fortress has been described as "one of the most striking and monumental pieces of architecture surviving from medieval Serbia", and "the witness of Serbian creative force." It is an accurate display of traditional medieval defensive architecture and has remained well preserved, suffering no major deterioration until World War II. The fortress and surrounding area have accumulated evidence of the civilizations that developed throughout history, mainly between the 15th and 20th centuries, providing a direct testimony for the progress of the medieval Serbian state and corresponding Orthodox Church.