Photos displayed inside this Unesco World Heritage Site attest to how dilapidated the cathedral was until the early 1990s – the original dates back to 1333. The lofty interior is dominated by an ornate organ used for regular concerts . Upstairs, the carved-wood Wallenrodt Library has interesting displays of old Königsberg. The top floor is devoted to Immanuel Kant; the exhibition includes his death mask. Kant's tomb (могила Канта) is on the building's outer north side.
