From October 1-31, families staying at any of the 16 Great Wolf Lodge resorts in the US will be able to take part in the annual Howl-O-Ween celebrations.

Timed to coincide with Halloween, the indoor waterpark chain will add a range of activities to its facilities, including Trick-or-Treat Trail, haunted house attractions, costume parades and the Monster Bash Dance Party.

In addition to two days of play in the waterpark for each night stayed at Great Wolf Lodge, all of the Howl-O-Ween activities are included complimentary as part of an overnight stay.