If you have questions about property valuation and property tax, visit boco.org/2023Valuation.


Museums & Sites

Agricultural Heritage Center

Get a glimpse into the history of agriculture in Boulder County and enjoy the rural surroundings. This site focuses on the years 1900 to 1925 when local families prospered as farmers and witnessed the coming of the Modern Age.

Altona Schoolhouse

Take a visit to the Altona Schoolhouse to see what it was like to be a student in the 1880s or 1940s. The one-room country school was built in 1880 and operated into the 1940s. In 2019, the county completed restoration and the school looks much like it did in 1880.

James F. Bailey Assay Office Museum

The Assay Office Museum contains many tools and implements used in the assaying process, as well as furniture and artwork owned by the Bailey family. The assay office was the place prospectors would take their ore samples to find out whether or not they had “struck it rich.”

Nederland Mining Museum

Visit the Nederland Mining Museum and get a glimpse into the world of hard rock mining days in Boulder County during the late 19th and early 20th centuries. Learn about the lives of the miners of yesteryear.

Contact Us

Parks & Open Space

Mon-Fri 8 a.m. – 4:30 p.m.
Office Location
5201 St. Vrain Rd.
Longmont, CO 80503
Map & Directions
Office Hours: Mon-Thu 8 a.m. – 4:30 p.m.
Friday by phone, email, or appointment only.
Parks are open sunrise to sunset

Connect With Us