Welcome to the ​“Secret City”

Tucked between the mighty Columbia River and the arid Rattlesnake Hills of Southeastern Washington State are a collection of communities bound together by one of mankind's most ambitious feats, the Manhattan Project. Today, this region is known as the Hanford and Tri-Cities area, and offers a glimpse into the massive undertaking of the 1940's that brought an end to World War II and began a new era of implications and opportunity.

Discovering Hanford’s Manhattan Project History Podcast Learn More
Virtual Tours
Experiences
World’s First Full Scale Nuclear Reactor
Sign Up
Ghost Towns of the Hanford Site
Sign Up
A Storytelling Hub for Hanford
Plan Visit
Self Guided Tours
Alphabet Homes

Roam the streets and stand amongst the homes of the scientists, engineers, workers, and operators of the Top…

Learn More
Landmarks

Explore the iconic community landmarks of the Manhattan Project's "Secret City" that still stand today.

Learn More
Overlooks

Get a vast view of the enormous Hanford Reservation and open landscape surrounding the Tri-Cities.

Learn More

Trip Ideas

Family STEM Itinerary Learn More
A Weekend of Science Learn More
Wine Country Experience Learn More
Where to Stay Learn More
Where to Eat Learn More
Museums Learn More