Simplify the following text for a Grade 8 native English-speaking person.
Original: El Escorial is a historical residence of the king of Spain , in the town of San Lorenzo de El Escorial , about 45 kilometres ( 28 miles ) northwest of the capital , Madrid , in Spain .
Simplified: It is located about 45 k northwest of the Spanish capital , Madrid , in the town of San Lorenzo de El Escorial .