1 ► Colorado, Alamosa County, Great Sand Dunes National Park and Preserve — A Landmark for People — Great Sand Dunes National Park and Preserve — National Park Service, U.S. Department of the Interior —

Near Highway 150.

2 ► Colorado, Alamosa County, Mosca — "Totally Unique and Unexpected" — Great Sand Dunes National Park and Preserve — National Park Service, U.S. Department of the Interior —

Near Highway 150 near Pinyon Circle.

3 ► Colorado, Alamosa County, Mosca — Dimensions — Great Sand Dunes National Monument —

On State Highway 150.

4 ► Colorado, Alamosa County, Mosca — Sangre de Cristo Ecosystem — Great Sand Dunes National Park and Preserve —

Near Highway 150.

5 ► Colorado, Alamosa County, Mosca — Stepping into Wilderness — Great Sand Dunes National Park and Preserve — National Park Service, U.S. Department of the Interior —

Near Highway 150.

6 ► Colorado, Alamosa County, Mosca — The Mountain Barrier —

Near Highway 150.

7 ► Colorado, Alamosa County, Mosca — Understanding the Great Sand Dunes System: the Sand Sheet —

On Lane 6N, 1.2 miles west of State Highway 150, on the left when traveling west.

8 ► Colorado, Archuleta County, Pagosa Springs — Pagosa Springs —

Near Hot Springs Blvd.

9 ► Colorado, Delta County, Delta — Ute Council Tree —

On G96 Lane at 1550 Road, on the left when traveling west on G96 Lane.

10 ► Colorado, Denver County, Denver, Central Business District — 6w — Rails and Mountains — Wall Street of the Rockies — Seventeenth Street Denver, Colorado —

On 17th Street at Arapahoe Street, on the right when traveling south on 17th Street.

11 ► Colorado, Denver County, Denver, Central Business District — 18e — Top of the World — Wall Street of the Rockies — Seventeenth Street Denver, Colorado —

On 17th Street at Glenarm Place, on the left when traveling south on 17th Street.

12 ► Colorado, Douglas County, Castle Rock — The Rock / Gray Gold —

On Wilcox Street close to 3rd Street, on the right when traveling south.

13 ► Colorado, Douglas County, Larkspur — Southwest Rises The Summit of Pikes Peak —

On Southbound Rest Area (Interstate 25 at milepost 171), in the median.

14 ► Colorado, El Paso County, Calhan — Geology — Paint Mines Interpretive Park —

Near Paint Mine Road, 1.5 miles east of North Calhan Highway.

15 ► Colorado, El Paso County, Cascade — The Continental Divide —

On Pikes Peak Hwy.

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16 ► Colorado, El Paso County, Colorado Springs, Cascade — A Look From The Top —

On Pikes Peak Toll Road.

17 ► Colorado, El Paso County, Colorado Springs, Cascade — Pike's Peak —

18 ► Colorado, El Paso County, Colorado Springs, Cascade — Ute Pass —

On Pike's Peak Highway, on the left when traveling south.

19 ► Colorado, El Paso County, Colorado Springs, West Colorado Springs — A Priceless Gift —

Near Garden Drive.

20 ► Colorado, El Paso County, Colorado Springs, West Colorado Springs — A Priceless Gift — Garden of the Gods Park —

Near Garden Drive.

21 ► Colorado, El Paso County, Colorado Springs, West Colorado Springs — Garden of the Gods Park —

On Gateway Road, on the right when traveling east.

22 ► Colorado, El Paso County, Colorado Springs, West Colorado Springs — The Amazing Balanced Rock —

On Garden Drive, on the left when traveling north.

23 ► Colorado, El Paso County, Colorado Springs, West Colorado Springs — The Garden of the Gods —

Near Garden Drive, on the right when traveling west.

24 ► Colorado, El Paso County, Colorado Springs, West Colorado Springs — Time Frozen In Stone — Garden of the Gods Park —

Near Garden Drive.

25 ► Colorado, Fremont County, Cañon City — 141 — Royal Gorge —

On County Road 3A, 4.5 miles south of U.S. 24, on the right when traveling south.

26 ► Colorado, Garfield County, Glenwood Springs — Building Interstate 70 Through Glenwood Canyon —

Near Interstate 70 Frontage Road at milepost 121.

27 ► Colorado, Garfield County, Glenwood Springs — The Glenwood Springs Hydroelectric Plant —

On East 6th Street at North River Street, on the right when traveling west on East 6th Street.

28 ► Colorado, Garfield County, No Name — A Grand Boulevard —

Near Interstate 70 Frontage Road at milepost 119 east of No Name Lane (County Road 129).

29 ► Colorado, Garfield County, No Name — The California Zephyr —

Near Interstate 70 Frontage Road at milepost 119 east of No Name Lane (County Road 129).

30 ► Colorado, Gunnison County, Gunnison — Forming a Pinnacle —

On U.S. 50, on the right when traveling west.

31 ► Colorado, Huerfano County, Walsenburg — 181 — Huerfano Butte — Beacon to Settlement —

On Interstate 25 at milepost 59,, 0.3 miles north of County Road 103, on the right when traveling north.

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32 ► Colorado, Jefferson County, Golden — Clear Creek —

On Washington Avenue.

33 ► Colorado, Jefferson County, Golden — Golden and Clear Creek —

On Washington Avenue Bridge, on the right when traveling north.

34 ► Colorado, Jefferson County, Golden — Late Jurassic Time —

35 ► Colorado, Jefferson County, Golden — Rock Deformation —

36 ► Colorado, Jefferson County, Golden — The Rocky Mountains —

Near Hog Back Road (State Highway 93) near West Alameda Parkway.

37 ► Colorado, Jefferson County, Golden — Volcanic Ash —

38 ► Colorado, Jefferson County, Golden, Lakota Hills — Our Changing Landscape-From Sea Floor to Mountain Top —

Near Lariat Loop Road.

39 ► Colorado, Jefferson County, Golden, Lakota Hills — What You Can See From Here Today —

Near Lariat Loop Road.

40 ► Colorado, Jefferson County, Morrison — Front Range Foothills —

Near Plains View Road.

41 ► Colorado, Larimer County, Rocky Mountain National Park — Continental Divide — Milner Pass     elev.   10,759 ft. —

On Trail Ridge Road (U.S. 34) 17.1 miles north of Western Road (County Road 49), on the right when traveling north.

42 ► Colorado, Las Animas County, Trinidad — 192 — Welcome to Colorado - Trinidad Country / Trinidad - Army of the West —

On Nevada Avenue at North Animas Street, on the right when traveling south on Nevada Avenue.

43 ► Colorado, Mesa County, Colorado National Monument — Ancient Environments —

44 ► Colorado, Mesa County, Colorado National Monument — Canyon In A Canyon —

45 ► Colorado, Mesa County, Colorado National Monument — The Grand View —

46 ► Colorado, Mesa County, Colorado National Monument — The Shapes of Erosion —

47 ► Colorado, Mineral County, South Fork — The Great Divide —

On U.S. 160, 0.2 miles County Road 402, on the left when traveling west.

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48 ► Colorado, Montrose County, Black Canyon of the Gunnison National Park — Pegmatite Dikes —

49 ► Colorado, Montrose County, Black Canyon of the Gunnison National Park — The Painted Wall —

50 ► Colorado, Montrose County, Montrose — So Bold, So Beautiful a Land —

Near Chipeta Road north of U.S. 550, on the right when traveling north.

51 ► Colorado, Ouray County, Ouray — It's Our Fault —

Near Box Canyon Road south of 3rd Avenue.

52 ► Colorado, Teller County, Florissant — The Big Stump —

Near County Route 1 south of County Route 421.

53 ► Colorado, Teller County, Florissant — The Fossil Beds — Florissant Fossil Beds National Monument —

On Teller County Route 1.

54 ► Colorado, Teller County, Florissant — What If? —

Near County Route 1 south of County Route 421.

55 ► Colorado, Weld County, Rockport — Majestic Plains —

On U.S. 85, 0.3 miles south of County Road 126, on the right when traveling south.