St. Ann Highlands, Colorado

Tungsten is a ghost town in Boulder County, in the U.S. state of Colorado. The former townsite is north of Middle Boulder Creek.

Bonanza Mountain Estates is an unincorporated community and a census-designated place (CDP) located in and governed by Boulder County, Colorado, United States. The CDP is a part of the Boulder, CO Metropolitan Statistical Area. The population of the Bonanza Mountain Estates CDP was 127 at the United States Census 2020. The Nederland post office (Zip Code 80466) serves the area.

The Switzerland Trail is the site of a historic 3 ft (914 mm) narrow gauge railroad line that was operated at different times by the Greeley, Salt Lake and Pacific Railway, the Colorado and Northwestern Railroad, and the Denver, Boulder, and Western Railroad around the turn of the 20th century in the Colorado front range mining area near Nederland, Gold Hill, and Ward. The west end of the trail is listed on the National Register of Historic Places as the "Denver, Boulder and Western Railway Historic District".

Barker Reservoir is a water supply reservoir in the Colorado Front Range located near the town of Nederland, Colorado in southwestern Boulder County. Barker Dam provides water to a downstream hydroelectric power generating facility, and its reservoir provides water to the city of Boulder, Colorado. In 1908, the Central Colorado Power Company began construction of Barker Dam to provide electricity to nearby mining communities and the city of Denver. Completed in 1910, the dam and Barker Reservoir were named for the owner of the land, Mrs. Hannah Connell Barker. Mrs. Barker refused to sell the land to the utility but was eventually forced to do so through a process similar to the contemporary legal procedure of eminent domain. The dam was constructed by hauling concrete and other materials along a specially constructed spur of the Switzerland Trail narrow-gauge railroad, which went bankrupt and was broken up in 1919.In 2001 the city of Boulder purchased the reservoir, dam, and associated facilities. The city operates the reservoir primarily for municipal water supply and secondarily to generate hydroelectric power. An aqueduct with an inlet just below the dam supplies water to Kossler Reservoir. There is then a 1828 foot drop to a hydroelectric plant near the base of Boulder Canyon, several miles downstream.

Northern Colorado is the name for a region in the state of Colorado and a proposed state in the northeastern portion of Colorado.

Sugarloaf (also spelled Sugar Loaf) is an unincorporated community and a census-designated place (CDP) located in and governed by Boulder County, Colorado, United States. The CDP is a part of the Boulder, CO Metropolitan Statistical Area. The population of the Sugarloaf CDP was 274 at the United States Census 2020. The Boulder post office (Zip Code 80302) serves the area.

Caribou Ranch was a recording studio built by producer James William Guercio in 1972 in a converted barn on ranch property in the Rocky Mountains near Nederland, Colorado, on the road that leads to the ghost town of Caribou. The studio was in operation until it was damaged in a fire in March 1985. The ranch hosted some of the most prominent acts of the 1970s and 80s and was closely associated with the band Chicago, who recorded five consecutive albums there between 1973 and 1977.

The Peak to Peak Scenic Byway is a 55-mile (89 km) National Forest Scenic Byway and Colorado Scenic and Historic Byway located in Gilpin, Boulder, Larimer counties, Colorado, USA. The Peak to Peak Highway was originally built in 1918 and provides views of the Front Range mountains in the Colorado Rocky Mountains. It was Colorado's first scenic highway. The Central City/Black Hawk Historic District is a National Historic Landmark. The Peak to Peak Highway connects to the Trail Ridge Road/Beaver Meadow National Scenic Byway at Estes Park.

Nederland (, NED-ər-lənd) is a statutory town located near Barker Meadow Reservoir in the foothills of southwest Boulder County, Colorado, United States. As of the 2020 United States Census it had a population of 1,471.

Frozen Dead Guy Days (started 2002) is an annual celebration held in the town of Nederland, Colorado until 2023 and in Estes Park, Colorado in 2023, to loosely celebrate the cryopreservation of Bredo Morstoel.

Pinecliffe is a U.S. Post Office and an unincorporated community located in Boulder County and Gilpin County, Colorado, United States. The Pinecliffe Post Office, in Boulder County, has the ZIP Code 80471.

Lincoln Hills in Gilpin County, Colorado, the United States, was a vacation resort for African-Americans. Lincoln Hills was created in 1922 by E.C. Regnier and Roger Ewalt, and was the only resort for African Americans west of the Mississippi River. Lincoln Hills served as a reprieve from segregation for middle class African-Americans in the 20th century.