Photos by Mark Hertzberg for SC Johnson (c)

The Frank Lloyd Wright-designed SC Johnson Research Tower in Racine, Wis. is relit Saturday evening December 21, 2013 with Wright’s original interior lighting scheme, to mark Winter Solstice. The Tower, which opened in 1950 and closed in 1982, will reopen for tours of two floors next spring. This marks the first time that Wright’s original interior lighting design – updated with energy efficient lights – has been seen for several decades. The interior will now be lit every evening.