Saudi Arabia has the second largest petroleum reserves in the world and is second only to Venezuela and is the worlds largest producer and exporter.
The heart of Makkah is the holy Ka'aba which is surrounded by Al Masjid al-Haram the Great Mosque of Mecca.
The city of Makkah itself is only accessible to Muslims.
Mecca is 5 hours behind of Kuala Lumpur.
However, it was demolished in 1387 AH since it took to much space.
Oldfather, Diodorus Of Sicily, Volume II, William Heinemann Ltd.