Visit the Holt & Miller Observatory for a bit of rooftop sky gazing! The space provides views of the Philadelphia Skyline while our historic 10-inch Zeiss Refracting Telescope provides views of the moon, most planets, star clusters, nebulae, a few galaxies, and even our closest star, the Sun.
The Holt & Miller Observatory is operated and maintained by The Franklin Institute’s Chief Astronomer, Derrick Pitts, along with the Institute's knowledgeable staff.
Things to Do and See at the Observatory
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Stargaze with 10-inch Zeiss Refractor TelescopePlanets, stars, star clusters, nebulae, and a even few galaxies await!
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Visit the nearest star—Our SunSee what real sunspots and flares look like without the need for shades!
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Travel through our Solar SystemJupiter, Saturn, Mars, and Venus are often stops on this interplanetary tour!
Interactive Map
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