Eureka: Quick Facts

Written and fact-checked by

The Information Architects of Encyclopaedia Britannica

Last updated

Oct. 24, 2026

News •

California state workers say strike follows ‘a lot of bad deals’ with state • Oct. 21, 2026, 9:45 AM ET (The Sacramento Bee)

Photos

Eureka: Carson Mansion

Map showing the location of Eureka on the northern coast of California, United States, near the Pacific Ocean, with state boundaries and neighboring states Oregon, Nevada, and Arizona labeled. An inset globe highlights the region within North America.

See All Images →

Topics

New York City Los Angeles Chicago Washington, D.C.San Francisco Philadelphia Boston Seattle Las Vegas Manhattan

Tower Bridge over the Thames River in London, England. Opened in 1894. Remains an Important Traffic Route with 40,000 Crossings Every Day.

Guess the City by Its River Quiz