Little Bighorn Battlefield National Monument

Established: July 1, 1940
Location: Montana
Area: 765 acres
Visitation (2017): 296,128

NPS Official Website

Marianas Trench Marine National Monument

Established: January 6, 2009
Location: Northern Mariana Islands, Guam
Area: 60,938,240 acres
Visitation (2017): n/a

FWS Official Website

Misty Fjords National Monument

Established: December 1, 1978
Location: Alaska
Area: 2,294,393 acres
Visitation (2017): ~500,000

USFS Official Website

Mojave Trails National Monument

Established: February 12, 2016
Location: California
Area: 1,600,000 acres
Visitation: n/a

BLM Official Website

Montezuma Castle National Monument

Established: December 8, 1906
Location: Arizona
Area: 859 acres
Visitation (2017): 398,174

NPS Official Website

Montezuma Castle National Monument (Trail Map)

Established: December 8, 1906
Location: Arizona
Area: 859 acres
Visitation (2017): 398,174

NPS Official Website

Mount St. Helens National Volcanic Monument

Established: August 26, 1982
Location: Washington
Area: 110,000 acres
Visitation (2011): 215,307

USFS Official Website

Muir Woods National Monument

Established: January 9, 1908
Location: California
Area: 554 acres
Visitation (2017): 1,062,099

NPS Official Website

Muir Woods National Monument (Redwood Canyon Area Trail Map)

Established: January 9, 1908
Location: California
Area: 554 acres
Visitation (2017): 1,062,099

NPS Official Website

Muir Woods National Monument (Trail Map)

Established: January 9, 1908
Location: California
Area: 554 acres
Visitation (2017): 1,062,099

NPS Official Website

Natural Bridges National Monument

Established: April 16, 1908
Location: Utah
Area: 7,636 acres
Visitation (2017): 107,443

NPS Official Website

Newberry National Volcanic Monument

Established: November 5, 1990
Location: Oregon
Area: 55,500 acres
Visitation (2017): ~50,000

USFS Official Website

Ocmulgee National Monument

Established: December 23, 1936
Location: Georgia
Area: 702 acres
Visitation (2017): 156,907

NPS Official Website

Oregon Caves National Monument

Established: July 12, 1909
Location: Oregon
Area: 4,558 acres
Visitation (2017): 72,212

NPS Official Website

Oregon Caves National Monument (Tour Route Map)

Established: July 12, 1909
Location: Oregon
Area: 4,558 acres
Visitation (2017): 72,212

NPS Official Website

Oregon Caves National Monument (Trail Map)

Established: July 12, 1909
Location: Oregon
Area: 4,558 acres
Visitation (2017): 72,212

NPS Official Website

Oregon Caves National Monument (Trail Map - Dayhikes)

Established: July 12, 1909
Location: Oregon
Area: 4,558 acres
Visitation (2017): 72,212

NPS Official Website

Oregon Caves National Monument (Trail Map - Short Trails)

Established: July 12, 1909
Location: Oregon
Area: 4,558 acres
Visitation (2017): 72,212

NPS Official Website

Organ Mountains-Desert Peaks National Monument

Established: May 21, 2014
Location: New Mexico
Area: 496,330 acres
Visitation (2017): n/a

BLM Official Website

Organ Pipe Cactus National Monument

Established: April 13, 1937
Location: Arizona
Area: 330,688 acres
Visitation (2017): 260,534

NPS Official Website

Organ Pipe Cactus National Monument (Ajo Mountains Trail Map)

Established: April 13, 1937
Location: Arizona
Area: 330,688 acres
Visitation (2017): 260,534

NPS Official Website

Organ Pipe Cactus National Monument (Backcountry Camping Zones)

Established: April 13, 1937
Location: Arizona
Area: 330,688 acres
Visitation (2017): 260,534

NPS Official Website

Organ Pipe Cactus National Monument (Puerto Blanco Mountains Trail Map)

Established: April 13, 1937
Location: Arizona
Area: 330,688 acres
Visitation (2017): 260,534

NPS Official Website

Organ Pipe Cactus National Monument (Visitor Center & Campground Areas)

Established: April 13, 1937
Location: Arizona
Area: 330,688 acres
Visitation (2017): 260,534

NPS Official Website

Pacific Remote Islands Marine National Monument

Established: January 6, 2009
Location: Pacific Ocean
Area: 313,818,892 acres
Visitation (2017): n/a

FWS Official Website

Papahanaumokuakea Marine National Monument

Established: January 6, 2009
Location: Pacific Ocean
Area: 373,120,000 acres
Visitation (2017): n/a

FWS Official Website

Petroglyph National Monument

Established: June 27, 1990
Location: New Mexico
Area: 7,532 acres
Visitation (2017): 141,803

NPS Official Website

Petroglyph National Monument (Boca Negra Area Trail Map)

Established: June 27, 1990
Location: New Mexico
Area: 7,532 acres
Visitation (2017): 141,803

NPS Official Website

Petroglyph National Monument (Piedras Marcadas Area Trail Map)

Established: June 27, 1990
Location: New Mexico
Area: 7,532 acres
Visitation (2017): 141,803

NPS Official Website

Petroglyph National Monument (Rinconada Canyon Map)

Established: June 27, 1990
Location: New Mexico
Area: 7,532 acres
Visitation (2017): 141,803

NPS Official Website

Petroglyph National Monument (Volcanoes Day Use Area Trail Map)

Established: June 27, 1990
Location: New Mexico
Area: 7,532 acres
Visitation (2017): 141,803

NPS Official Website

Pipe Spring National Monument

Established: May 31, 1923
Location: Arizona
Area: 40 acres
Visitation (2017): 29,065

NPS Official Website

Pipestone National Monument

Established: August 25, 1937
Location: Minnesota
Area: 282 acres
Visitation (2017): 76,486

NPS Official Website

Pompeys Pillar National Monument

Established: January 17, 2001
Location: Montana
Area: 51 acres
Visitation (2017): ~30,000

BLM Official Website

Poverty Point National Monument

Established: October 31, 1998
Location: Louisiana
Area: 911 acres
Visitation (2015): 34,414

NPS Official Website

Prehistoric Trackways National Monument

Established: March 30, 2009
Location: New Mexico
Area: 5,255 acres
Visitation (2011): 4,360

BLM Official Website

Pullman National Monument

Established: February 19, 2015
Location: Illinois
Area: 250 acres
Visitation (2017): n/a

NPS Official Website

Rainbow Bridge National Monument

Established: May 30, 1910
Location: Utah
Area: 160 acres
Visitation (2017): 108,418

NPS Official Website

Rio Grande del Norte National Monument

Established: March 25, 2013
Location: New Mexico
Area: 242,455 acres
Visitation (2014): 128,000

BLM Official Website

Rio Grande del Norte National Monument (Natural Features Map)

Established: March 25, 2013
Location: New Mexico
Area: 242,455 acres
Visitation (2014): 128,000

BLM Official Website

Rose Atoll Marine National Monument

Established: January 6, 2009
Location: American Samoa
Area: 8,571,633 acres
Visitation (2017): n/a

FWS Official Website

Russell Cave National Monument

Established: May 11, 1961
Location: Alabama
Area: 310 acres
Visitation (2017): 24,377

NPS Official Website

Salinas Pueblo Missions National Monument

Established: November 1, 1909
Location: New Mexico
Area: 1,077 acres
Visitation (2014): 35,148

NPS Official Website

Salinas Pueblo Missions National Monument (Abo Area)

Established: November 1, 1909
Location: New Mexico
Area: 1,077 acres
Visitation (2014): 35,148

NPS Official Website

Salinas Pueblo Missions National Monument (Gran Quivira Area)

Established: November 1, 1909
Location: New Mexico
Area: 1,077 acres
Visitation (2014): 35,148

NPS Official Website

Salinas Pueblo Missions National Monument (Quarai Area)

Established: November 1, 1909
Location: New Mexico
Area: 1,077 acres
Visitation (2014): 35,148

NPS Official Website

San Gabriel Mountains National Monument

Established: October 10, 2014
Location: California
Area: 346,177 acres
Visitation (2017): n/a

USFS Official Website

San Juan Islands National Monument

Established: March 25, 2013
Location: Washington
Area: 1,000 acres
Visitation (2017): n/a

BLM Official Website