BUY IT OR BUILD IT: “MAKING A MODERN FARMHOUSE”

HGTV, 9 p.m.

Alex and Dave need a new home and are open to either buying it or building it. Their dream is to have an open floor plan with a rustic modern kitchen and space to entertain. Calvin and Chris Lamont want to deliver everything on their wish list on time and on budget, but that becomes easier said than done.

CHICAGO FIRE

NBC, 9 p.m.

Season Finale! the big wedding day arrives, and Firehouse 51 welcomes Casey (Jesse Spencer) back to celebrate the joyous occasion. Emma’s (Caitlin Carver) plans to replace Violet (Hanako Greensmith) come to a shocking end. The drama will return for Season 11.

NOVA: “ICE AGE FOOTPRINTS”

PBS, 9 p.m. Thousands of prehistoric footprints left by Ice Age humans and animals stretch for miles across the blinding white surfaces of New Mexico’s White Sands National Park. In this episode, find out how this phenomenal collection of prints preserves a unique series of snapshots of life and behavior, capturing moments when humans crossed paths with extinct beasts and providing important new evidence about the peopling of the Americas.

JOSH GATES TONIGHT

Discovery Channel, 10 p.m. Season Premiere! The lineup features an eclectic group of celebrity guests, original cocktails and trademark excursions into the field, as well as Josh Gates’ insights into his Expedition Unknown and Expedition X adventures.

CHICAGO P.D.

NBC, 10 p.m.

Season Finale! After an explosion rocks the case, the team scrambles to finally take down Escano (José Zúñiga) as everyone nears their breaking point. The series has been renewed for Season 10.

COLOMBIA — WILD AND FREE

PBS, 10 p.m.

Series Finale! The series journeys to the largely uninhabited Pacific coast of Colombia, where humpback whales give birth and fish hunt crabs in the mangrove forests. It then ascends to snow-capped Andean volcanoes, which are home to stunning spectacled bears, condors and hummingbirds.

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