Category:Built in Washington (state) in 1856

English: This category applies to the geographic area that is now the U.S. state of Washington, but applies (in whole or part) to a period that predates Washington statehood. What is now the U.S. state of Washington was previously:

• Native American territory from time immemorial
• Part of the Oregon Country jointly occupied by the U.S. and the UK 1818-1846
• Part of the U.S. Oregon Territory (defined by treaty June 15, 1846, organized August 14 1848)
• The U.S. Washington Territory March 2, 1853 - November 11, 1889