Boo at the Zoo is coming back to the Louisville Zoo. Here's what to know.

The Louisville Zoo is returning with its annual Halloween celebration, and tickets are currently on sale for the fun and spooky festivity.

Boo at the Zoo, a long-standing event of more than 40 years, is slated for Sept. 28 to Oct. 27 and attendees are encouraged to wear their craziest costumes for the annual event.

Here's what we know about the upcoming Boo at the Zoo.

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What is Boo at the Zoo?

Boo at the Zoo is all about turning the zoo into a "living storybook," the zoo stated.

"There will be music, photo opportunities around every corner and, of course, a safe place to trick-or-treat for kids 11 and under," zoo spokesperson Kyle Shepherd said. Guests can bring trick-or-treat bags or they can be purchased for $2 at the gift shop.

Boo at the Zoo schedule

Boo at the Zoo, supported by Meijer, Great Clips, Norton Children’s, UPS, etc., benefits the Zoo’s animal care programs, visitor experience and conservation education.

Taking place Thursdays through Sundays beginning at the end of September, attendees will also be able to access attractions like the Spooktacular Carousel, “not-so-itsy-bitsy” Spider House and the Headless Horseman of Sleepy Hollow.

Regular zoo hours will conclude at 4 p.m. with the gates closing at 3 p.m. on Boo at the Zoo dates. Halloween festivities take over from 5-9 p.m. and guests must leave the zoo by 10 p.m.

The zoo is also featuring a sensory-friendly night from 5-7 p.m., Oct. 20, and an allergy-friendly night Oct. 23.

When is Boo at the Zoo at Louisville's Zoo

Boo at the Zoo is taking place from 5-9 p.m. on multiple Thursdays to Sundays from the end of September to the end of October.

• Sept. 28-29
• Oct. 3-6
• Oct. 10-13
• Oct. 17-20
• Oct. 24-27

How much does Boo at the Zoo cost?

All-inclusive tickets with admission, parking and access to multiple attractions are on sale.

• Non-members (ages 3+): $13.50
• Members (ages 3+): $7
• Meijer "anytime tickets": Available at participating Meijer stores for $11.50 starting Sept. 20
• for all non-members 3 and older and $7 for all members 3 and older. Children 2 and under are free and do not require a ticket.

Boo at the Zoo tickets are non-refundable and cannot be exchanged. They can be purchased here.

Louisville Zoo location

The Louisville Zoo is located at 1100 Trevilian Way.

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This article originally appeared on Louisville Courier Journal: Boo at the Zoo is coming back to the Louisville Zoo. Here's what to know.