/usr/include/tao/Monitor/ is in libtao-dev 6.0.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/tao/Monitor/Monitor.h
/usr/include/tao/Monitor/MonitorA.h
/usr/include/tao/Monitor/MonitorC.h
/usr/include/tao/Monitor/MonitorC.inl
/usr/include/tao/Monitor/MonitorS.h
/usr/include/tao/Monitor/Monitor_Impl.h
/usr/include/tao/Monitor/Monitor_TypesA.h
/usr/include/tao/Monitor/Monitor_TypesC.h
/usr/include/tao/Monitor/Monitor_TypesC.inl
/usr/include/tao/Monitor/Monitor_TypesS.h
/usr/include/tao/Monitor/Monitor_export.h
/usr/include/tao/Monitor/Monitor_includeA.h
/usr/include/tao/Monitor/Monitor_includeC.h
/usr/include/tao/Monitor/Monitor_includeS.h