Allah (swt) says in Holy Quran in verse number 115 of Surah Baqarah:
وَلِلَّـهِ الْمَشْرِقُ وَالْمَغْرِبُ ۚ فَأَيْنَمَا تُوَلُّوا فَثَمَّ وَجْهُ اللَّـهِ ۚ إِنَّ اللَّـهَ وَاسِعٌ عَلِيمٌ
"To GOD belongs the east and the west; wherever you go there will be the presence of GOD. GOD is Omnipresent, Omniscient."
