Succop Nature Park, 185 W. Airport Road, Penn Township, will host Creatures of the Night, a guided evening walk outdoors to meet larger-than-life costumed nocturnal animals, at half-hour intervals the evening of Oct. 26. Registration is necessary at www.aswp.org or by calling 412-963-6100.

Nautical Nature pontoon boat at Moraine State Park operates cruises on Lake Arthur at 1 and 3 p.m. Saturdays and Sundays from McDanel's Launch on the North Shore. Call 724-368-9185. The cruises end with the Oct. 27 Halloween cruise. Reservations are recommended.

A star party, sponsored by the Amateur Astronomers Association of Pittsburgh, will begin at 7 p.m. Saturday, weather permitting, at the Nicholas E. Wagman Observatory in Deer Lakes Regional Park near Russellton. Call 724-224-2510.