Simplify the following text for a Grade 5 native English-speaking person.
Original: On November 2 , 1984 , UNESCO declared The Royal Site of San Lorenzo of El Escorial a World Heritage Site . It is an extremely popular tourist attraction , often visited by day-trippers from Madrid - more than 500,000 visitors come to El Escorial every year .
Simplified: El Escorial is a famous royal site in Spain .