Art Shanty Projects began its first of four weekends welcoming visitors to explore immersive art installations on Lake Harriet in Minneapolis. (AP video: Mark Vancleave)

A polar vortex sun and below-zero wind chills marked the opening day for the Art Shanty Projects on Lake Harriet.

A Minneapolis wintertime staple is back once more – this time, with renewed hope. As the Ice Shanty Art Project enters its 21st year, it's coming off arguably it's toughest year – when Minnesota's warmest winter on record cut the project short after just a handful of days.

After last year’s event was cut short by March-like temperatures, organizers have been monitoring the forecast.

The Art Shanty Projects, featuring 20 uniquely designed shanties with performances and interactive experiences, returns Jan. 18–Feb. 9, showcasing a new mentorship program and celebrating ideal ice conditions after last year's weather challenges.

Lake Harriet’s Art Shanty Projects opened late on Sunday. Organizers kept visitors away because of extremely cold weather in the morning.

Despite frigid conditions in Minneapolis, thousands ventured onto a frozen Lake Harriet on Saturday to immerse themselves in art, connect with others, and brave the cold at the annual Art Shanty Projects.