The Old Hansen Planetarium is a three-story building located at 15 South State Street in Salt Lake City, Utah.

A group of women called the Ladies Literary Society helped out by persuading the mining millionaire John Quackenbos Packard to donate land and money for the new building,[2] which cost $100,000 at the time.

The library was three stories tall with a two-story entrance pavilion constructed of oolite limestone and 20,000 square feet (1,900 m2) of floor space.

The roof was slightly flared, and the roofline was broken by a large carved stone gable with a center arched window and four decorated pilasters.

In the center of the room stood a librarian's desk made of steel and topped by golden oak, the same finish of the interior of the entrance foyer.

Before Tanner came along, two referendums to fund the empty building were rejected, but the jeweling company's clear plan got the votes it needed.

Instead of simply demolishing the dome, however, it was systematically dismantled and donated to the Zion's Gateway to the Stars planetarium in Orderville, Utah.

Since the back had already been altered by the Hansen Planetarium and there were no original images of that wall from the 1905 building, Curtis Bennett, vice president of the company's retail operations, was allowed a little freedom with that design.

The rear wall contains the largest laser stone-carving project in the world with 18 panels covering 900 square feet (84 m2) and weighing 44,000 pounds (20,000 kg) in all.

The chandelier was designed by Sharon Marston and includes about 4,000 strands of fiber optics, more than 14,000 interwoven shapes made of white polymer and steel, and about 3,000 golden and amber glass leaves.