John Hancock Center officials plan to open that a 94th floor "ice" rink on the observatory this week.
Skaters will have a chance to twirl and twist more than 1,000 feet in the air on world's highest ice skating rink, according to the building's management.
The rink is made of a synthetic substance called "xtraice," which allows the rink and room to be kept at a comfortable temperature -- no Zamboni needed. Kids and adults will be able to lace up their real skates, too.
"This is really a two centimenter-thick synthetic product and on top of it we apply a water-based silicone, which provides the glide," said Daniel Thomas, the observatory's general manager.
Cinderella and Prince Charming from the touring "Disney on Ice presents Princess Classics" will be performing on a similar rink.
The rink will be open January through March. See the concierge on the 94th floor for tickets.