Oregon Historical Society Museum

From the Wikipedia page

The Oregon Historical Society Museum is a history museum housed at the Oregon Historical Society in downtown Portland, Oregon, United States. The museum was created in 1898 and receives about 44,000 visitors annually.

It houses the Portland Penny that decided the city’s name. This 1835 copper penny was flipped to decide between the names of Boston and Portland, with Portland as the winner. The museum contains over 85,000 artifacts, and is accredited by the American Alliance of Museums.