Some of the world's most incredible engineering projects now lie in ruins. These deserted places are home to extraordinary mysteries and untold secrets, and we revisit them to understand how they were built, and why they were abandoned.

Ancient investigations turn tech as specialists harness an advanced digital forensics lab and use the latest scientific discoveries to solve the biggest mysteries of ancient history.

The war against the COVID-19 pandemic has come to America, and using the latest information from the frontlines, experts reveals why this novel form of coronavirus is so deadly and how we're fighting back.

Follow the journey of Peter Stormare and history enthusiast Elroy Balgaard as they set out to solve the mystery surrounding the Kensington Runestone, an artifact that, if proven authentic, will rewrite the history of North America.

Behind every seemingly impossible marvel of modern engineering is a cast of historic trailblazers who designed new building techniques, took risks on untested materials and revolutionized their field.

Using cutting-edge forensic analyses, some of the world's leading investigative experts uncover the stunning truth behind compelling mysteries from ancient times to the recent past.

This is BattleBots, where competitors design and operate remote-controlled armed and armored machines designed to fight in an arena combat elimination tournament.

After a six-month journey, NASA's Perseverance rover arrives on Mars to explore brand-new mysteries on the Red Planet; behind-the-scenes access reveals the dramatic final moments of its voyage, how experts pulled it off, and what they hope to discover.

The strongest, fastest and most skilled men and women in America face off against the largest predator in North America -- the grizzly bear. The competitors must tough out three rounds of grueling competition by land, water and air for a shot at competing in an epic, awe-inspiring final challenge.

discovery+ is here, the only streaming service with the greatest real-life entertainment from your favorite TV brands - including HGTV, Food Network, TLC, ID and more - and personalities, plus exclusive originals. Start your free trial today!

Watch as architects, historians and engineers explore if modern day innovations could be applied to recreate iconic building projects, or if fundamental construction techniques have been lost to time.

Building Giants showcases how key technological innovations enable giant superstructures to be built. Footage filmed during construction along with CGI reveal the building process with astonishing detail.