“Spiders Around the World” at The Butterfly Pavilion, 6252 W. 10th Ave., Westminster; 9 a.m.-5 p.m. daily Sunday-oct. 31. Tickets online or in person: $15 for adults, $14 for seniors (ages 65 and older); $10 for children (2-12); 2 and younger free. butterflies.org, 303-469-5441