Hilton Worldwide signs Management Agreement with High for Touristic Projects in Egypt; new-build Hilton Heliopolis to open 2014 CAIRO, Egypt and MCLEAN, Va., March 7, 2010: Hilton Worldwide has signed a Management Agreement with High for Touristic Projects (part of The Egyptian Engineers Companies – Zaghloul Group) for the new-build Hilton Heliopolis in Egypt’s capital Cairo, scheduled to open in 2014. The 485-room and 150-apartment low-rise property located in Cairo’s ...