Nathan Aasness of Showcore Inc. installs lighting in the Winter Carnival Ice Castle under construction Tuesday, Jan. 24, 2017, in St. Paul's Rice Park, The Winter Carnival Ice Castle is under construction by Bricklayers Local 1 in St. Paul's Rice Park. (Pioneer Press: Scott Takushi), Bricklayers Local 1 will spend three days building the castle in Rice Park. (Pioneer Press: Scott Takushi), Blocks of ice fill the street in front of the downtown public library, where the Winter Carnival Ice Castle is under construction. (Pioneer Press: Sco, Rod Schmidt moves a block of ice into place, in St. Paul's Rice Park where the Winter Carnival Ice Castle is under construction. (Pioneer Press: Scott, Bricklayers, laborers, plumbers, carpenters, millwrights, operating engineers and electricians union locals are working to bring the Winter Carnival i