The Monarch butterflies stay in the grove from October/November to February
Please, take note that it is strictly forbidden to touch the butterflies - under a fine of $1,000.
Admission is free.
More information about Monarch viewing http://www.pgmuseum.org/monarch-viewing/
Monterey tourist website http://www.seemonterey.com/things-to-do/parks/monarch-grove/
Phone +1 831 648 5716
Address Lighthouse Avenue, Pacific Grove, CA 93950, USA
Coordinates 36°37'35.635" N -121°55'51.153" E