Event Colorado Day Thursday, August 1, 2019 | 10:00AM — 5:00PM On August 1, 1876, President Grant made Colorado the “Centennial State.” Celebrate Colorado’s birthday with music, dancing, performances and FREE ADMISSION! Celebra el cumpleaños del estado con música, baile, y espectáculos. Entrada GRATIS! Stay tuned for more details coming soon! Location History Colorado Center 1200 Broadway, Denver, CO, 80203 (303) 447-8679 Today's Hours: 10 am - 5 pm 39.735281, -104.9873965 Tickets Free day includes admission to all museums and exhibits!