San Gabriel Mountains was designated as a national monument fairly recently in 2014 by former U.S. president Barack Obama. The mountains are a part of the Angeles National Forest and the San Bernardino National Forest and spans over 345,000 acres. During your trip there you’ll be able see and do so much; they have an observatory that lets you see the expanse of cosmos, many sites which are listed on the National Register of Historic Places, as well as several archaeological sites with rock art which provide a glimpse into ancient civilizations. Other aspects include thousands of miles of hiking trails, several streams, and many outdoor recreation activities such as camping and horseback riding.

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