Hato Rey is a former ward located in the northwest part of the dissolved municipality of Río Piedras. It now stretches over three wards of the municipality of San Juan, Puerto Rico:
Because of its location, many Puerto Ricans travelling to Old San Juan must drive through Hato Rey.
Its name means "the king's cattle farm (hato)". In the 18th century, cattle would roam among the sugar cane fields in the area. Its proximity to residential areas in San Juan, Río Piedras, Miramar, etc. made it a perfect location from where to produce what its residents would eat. The area also used to be known as "Las Monjas" (the nuns) due to a convent that used to be located in the area in the 19th century.
The Northern portion of Hato Rey is a startling contrast between the ward of the very poor and La Milla de Oro (The Golden Mile), a stretch that effectively covers only one mile but that is home to the headquarters of many large local and international banks that are one of the most important centers of Puerto Rico and the Caribbean's economy and some upper middle class condominiums.
Hato Rey is a Tren Urbano rapid transit station in the Hato Rey financial district of San Juan, Puerto Rico. The station opened on December 17, 2004. The station is located adjacent to the José Miguel Agrelot Coliseum and is the most used public transit used to and from concerts held at the venue.
The Hato Rey station is the only station to extend operating hours after nighttime events end at the Choliseo until all passengers in line have entered the station. Late night-scheduled one-way trains run in both directions of the line only from the Hato Rey station. The Bayamón route train will stop at every station only to drop off passengers, instead of picking up, and will continue the route until it reaches the end of the line. There is no service to and from other stations after-hours.