Adler Planetarium

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The planetarium is built on what once was an artificial island on Lake Michigan. Northerly Island, as it is called, was the first of what was to be a series of artificial islands stretching south. The permanent land link was constructed soon after the planetarium was built. Each of the twelve corners of the landmark 1930s building is decorated by a bronze plaque, which represents a sign of the zodiac. These plaques were created by sculptor Alfonso Ianelli. The historic landmark building was designed by architect Ernest Grunsfeld. The Adler houses one of the world's finest collections of astronomical artifacts, including treasures such as the world's oldest known window sundial (dated 1529) on the outdoor terrace perfect for a backdrop for wedding ceremonies and cocktailn receptions.