Four families transform their homes for the holidays in hope of winning $50,000.

Families transform their homes in hopes of winning $50,000, and a display features 500,000 lights.

Families transform their homes for the holidays in hopes of winning $50,000.

Four families transform their homes for the holidays in hopes of winning $50,000.

Four families transform their homes for the holidays in hopes of winning $50,000.

Families showcase festive displays, including handmade plasma icicles and a 16-foot snow slide.

Families showcase festive displays, including a laser show and dancing trees that are 45-feet tall.

Competing displays include a 250,000 light home with a Santa retreat, and a dazzling nativity scene.

Displays include an emoji celebration, a light show with a float, and a tribute to a lost loved one.

Displays include a Magic Kingdom-inspired light show, a high-tech homemade light show and more.

Competing displays include a tree with more lights than the one at Rockefeller Center.

Displays include a Northwest-theme, classic Christmas toys and a theme park design.

Competing displays include an array of decorations, animatronics and a tribute to veterans.

Four families will compete each week to transform their homes for the holidays in just 21 days.

Four families will compete each week to transform their homes for the holidays in just 21 days.

Four families will compete each week to transform their homes for the holidays in just 21 days.

Four families will compete each week to transform their homes for the holidays in just 21 days.

Mine shaft filled with holiday spectacles; a blow mold-filled design; an array using 115,000 lights.

A wonderland filled with whimsical characters; a dancing light show; a design with Santa's cottage.

Displays in Merrick, N.Y.; Wethersfield, Conn.; Ponca, Neb.; and Seattle.

Holiday displays in Kokomo, Ind.; Weirsdale, Fla.; Grand Rivers, Ky.; and Clifton, Ohio.

Rockaway Beach, N.Y.; Windermere, Fla.; Fox River Grove, Ill.; and San Francisco.

Showcasing the most spectacular and over-the-top Christmas displays in America.

Displays in Escondido, Calif.; Waco, Texas; Bismarck, N.D.; and Ambler, Penn.

The Brewster family show their “Christmas in New York City” themed display, featuring a Herald Square stage with dancers inspired by The Rockettes and a massive tree, in Brewerton, New York; the Chiles family show their “Miracle of a Million Lights” display covering outside and inside of an 1880s-era mansion with 60-foot-tall candy cane trees and a life-size snow globe.

The Torres family show their pirate-themed Caribbean Christmas display, featuring a two-story handcrafted castle that covers the facade of their house, a life-sized pirate ship with cannons and a 35-foot mast, in Henderson, Nevada; the Murphy family, with the help of their art class students, transform their house into Christmas art with over 400 precisely cut figurines, 75 extravagant scenes and a massive 25-year-old Cinderella castle.

The heavyweights division has the Bentley family with “Bentleyville,” a 22-acre decorated city park with 5 million lights, over 200 wireframes and the tallest man-made mega tree in the country, in Duluth, Minnesota; the Winter family with “Cambria Christmas Market,” a Germany-meets-California display, filled with gift shops and food stalls, plus an enchanted forest spread over 25 acres.

Displays include the Nagy family with their high-tech light show dedicated to their dog and packed with a towering joy sign, a ballet of snowflakes on the roof and an interactive talking snowman, in Waterford Township, Michigan; the Nirschl family with their heartwarming Christmas display, dedicated to family and all the things they love, including inflatables, a magical archway, and a festive interior.

The Miranda family show their pixel light show, 3D-printed parts, and 2 matrix displays with green-screen video effects, in Edmond, Oklahoma; the DeGennaro family show a North Pole in the desert featuring 8 DIY reindeer, a candy river with homemade Gingerbread men on the outside and over 1,7000 decorations stacked from floor to ceiling on the inside.

The Cottrell family show their display made by 89-year old Calvin Cottrell and his family featuring a tractor ride around 4 acres, a homemade barn for their Nativity, a Ferris wheel with bear blow molds, and a 47-year old Mega Tree, in Rossville, Indiana; the Hudgins family show their character cutouts, elf houses with animated characters, hand-painted blow molds, and Gingerbread men.

Holiday displays in LaVerkin, Utah; Wilmington, Mass.; St. Louis, Mo.; and Deer Park, N.Y.

Holiday displays in Jenks, Okla.; Boise, Idaho; Fontana, Calif.; and Brownsville, Tenn.

Holiday displays in Egg Harbor Township, N.J.; Lehi, Utah; East Peoria, Ill.; and Glendale, Ariz.

Holiday displays in San Jose, Calif.; Hamilton, N.J.; Lake Mary, Fla.; and Las Vegas.

Holiday displays in Brooklyn, NY, Atlanta, GA, Independence, KY and Winter Haven, FL.

Holiday displays in Alexandria, VA, Corriganville, MD, Burbank, CA and Surf City, NC.

The Ford Family presents a Nightmare Before Christmas display with a scary toy factory and more in Mission Viejo, CA; the Quintero Family presents a whimsical Christmas meadow with flowers radiating Zen and peace in Atwater, CA; the Aromin family puts on a synchronized light show with a 12-foot replica of the Mickey Ferris Wheel in Fairfield, CA; and the Levy family displays their symmetrical diamond-shaped lights in Sacramento, CA. Judge Carter Oosterhouse chooses the winner.

The Wilson Family presents a dreamy Candyland, with a reindeer flight school, the Peppermint Express train, and a spot to make s'mores in Windcrest, TX; the Wilhelm family puts on dancing lights with lively music and a one-of-a-kind hologram in Amarillo, TX; the Cox family displays a DIY Winter Wonderland with a handmade train and a life-size choir in Corpus Christi, TX; and the Bocanegra Family presents a nativity scene featuring Mary, Joseph, Baby Jesus, and several life-sized animal figurines in Corpus Christi, TX. Judge Taniya Nayak picks the winner.

The Sablich family creates a North Pole experience featuring Santa's Workshop in Fort Lauderdale, Florida; the McGonigle family spaces light strings exactly three inches apart, plus a gingerbread house and 102 dalmatians in Plantation, Florida; the Fester family displays 750,000 lights, 99 Christmas trees, and more exciting surprises in Panama City Beach, Florida; and the Alred family displays light strands 75 feet high in Jacksonville, Florida. Judge Taniya Nayak decides the winner.

The Relvas family creates a Swiss Alps Christmas town with over 400 figurines in Ladera Ranch, California; the Christensen family showcases their "Frozen" inspired holiday display and waterfall of lights in Citrus Heights, California; the Clark family presents a display of seven themed areas from LED palm trees to a whimsical forest in Clarksburg, California; and the Berndt family puts on an interactive display featuring a working train, penguin slide, and giant claw lift that distributes presents to the children in Santa Rosa, California. Judge Carter Oosterhouse make the decision.

The Campbell, Connors, Foy and Hughes families compete.

The Masone, Cook, Rezendes and Joules-Cornetti families compete.

The Laakso, McCarty-Williams, Hetherington and Kittell families compete

The Richards, Kraklow, Clark and Bell families compete

The Wright, Mach, Artz and MacGregor families compete

The Blasko, Slankard, Buchanan and Clinkscales families compete