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Where we provide experiences that connect us to the wonders of the cosmos at the very place where the universe was discovered.

Please be advised when visiting the mountain:

• There is no reliable cell service once you start up Angeles Crest Hwy or on our campus.

• There are no gas stations on the mountain; the closest is 20 miles away in La Cañada.

• An Adventure Parking Pass is required for daytime parking in the main lot and can be purchased at the Cosmic Café.

• There is a 10-minute walk from the parking lot to the Auditorium or Domes. Comfortable shoes are recommended.

• Mount Wilson's elevation is 5,700 ft. Those with heart or respiratory problems may have trouble with the altitude.

• It is much cooler on the mountain in the evenings - come prepared with warm clothing.

• As our facilities are over 100 years old, they are not ADA-compliant. Paths and stairs are not accessible for those with physical disabilities.

• It is imperative to arrive on time for evening events. Our gates close shortly after the beginning of any evening program and latecomers will not be able to enter.

• Restrooms are limited. Restrooms can be located by the Cosmic Cafe, and limited bathrooms are available at the Auditorium. During events, porta-potty bathrooms can be found outside the 100-inch telescope dome.

• Do not use Apple Maps for directions to our campus. They currently send you to our offices in Pasadena, which is incorrect. Please see our website for downloadable maps and directions: VISITING

• While extremely rare, the lower portion of Angeles Crest Highway can close. Please use this alternate route should this occur: ALTERNATE