Off Limits

Don takes a wet ride to see how Seattle's hardy pioneers paved the way.

Don explores the hidden remains of San Francisco's rough-and-tumble past.

Bold engineering & deadly secrets hidden in Arizona's deserts are revealed.

Don scours the terrain to discover how people earned a living in Tennessee.

Don explores the marvels and lost worlds of a forgotten city - Buffalo.

Don uncovers the history of New York on the city's "other" islands.

Don explores a side of Boston on how it solves issues with bold ideas.

Don visits hidden corners where New York City is reinventing itself.

Don explores Hawaii's bloody rituals, secret bunkers & underground worlds.

St Louis' secret world shows how wild ambition made it a powerhouse.

Don gets dirty in Pittsburgh's industrial wasteland & hi-tech wonders.

Don explores the Twin Cities' underworld, gangster hangouts and industries.

Don escapes from Alcatraz, tunnels under New York and pours a lot of gold.

Don tackles gators, flies a blimp, zip-lines underground and more.

Don fights fire in Florida, makes snow in California and more.

Don scales coasters in Ohio and blasts away a tunnel under New York.

Don glimpses into Denver's mint, drives a NASA rover and lights up Vegas.

Don races down an icy Utah slope and gets underneath the Denver airport.

Don digs for salt in Utah, crushes scrap metal, & flies atop a tramcar.