Carmen LaRue Grijalva
Google
5 stars for the park - 1 star for the reservation / payment / access process
The access procedure is soooo complicated but absolutely worth it!. Please make sure to preregister your visit on the Parque Aconcagua site. When you get to the main entrance you will need this in order to pay your entrance to the park. Once the payment is completed then you have to go to the office next door to show proof of payment where you will receive the ticket to access the park. Honestly, too many steps that could be combined in just one.
If you are driving, you will be able to access the park for around 1 km, then you will have a 15 minute walk to the first lookout at about 3,000 meters. From here you have an amazing view of the Aconcagua. For those fit individuals, you can keep walking for another 45 minutes to another lookout / bridge.