CREATE TABLE table_45248 ("Name" TEXT, "Pinnacle height" TEXT, "Structure type" TEXT, "Main use" TEXT, "Country" TEXT, "Town" TEXT)

What type of structure is there at the American Tower Christmas?
SELECT "Structure type" FROM table_45248 WHERE "Name" = 'american tower christmas'
SELECT "Structure type" FROM "table_45248" WHERE "Name" = 'american tower christmas'