Castle Rock
Towering chalk spires shaped like castle towers rise from the western Kansas grasslands, built from tiny sea creatures that lived millions of years ago.
Regional outdoor-learning catalog
The catalog includes 70 places across 6 states or territories in this region. Families can investigate prairie ecology, grasslands, badlands, fossils, bison, and Indigenous history through park-specific observations, discussion, field notes, and shared trip planning.
Plan from the managing agency: catalog descriptions support learning, not live visitor logistics. Check current closures, access, reservations, weather, wildlife rules, and permitted routes before every visit.
Towering chalk spires shaped like castle towers rise from the western Kansas grasslands, built from tiny sea creatures that lived millions of years ago.
The largest area of public land in Kansas, where you can hike along the Santa Fe Trail ruts and see the shortgrass prairie that pronghorn call home.
The largest state park in Kansas, with a big lake for boating and swimming, surrounded by rolling Flint Hills prairie.
A beautiful drive through the last great expanse of tallgrass prairie in the world, with rolling green hills and amazing spring wildflower displays.
A hidden gem with sandstone canyons, natural rock arches, and ancient inscriptions carved by Native Americans and pioneers in the Dakota sandstone.
A large tallgrass prairie research station near Manhattan, Kansas with hiking trails through some of the most pristine prairie left in the world.
Massive chalk pyramids rising 70 feet from the flat Kansas prairie. These chalk pillars were once at the bottom of a vast inland sea.
Giant mushroom-shaped rocks formed over millions of years stand in the Kansas prairie, looking like something from another planet.
The only remaining western town established by formerly enslaved African Americans after the Civil War, telling the story of brave pioneers who built a new life on the prairie.
One of the last remaining pieces of the tallgrass prairie that once covered 170 million acres. The grass here can grow taller than a grown-up!
One of the last stretches of free-flowing Missouri River with native prairie, forested river bottoms, and a nature preserve with bison.
The remote site of Theodore Roosevelt's beloved Elkhorn Ranch along the Little Missouri River, the place he called his "home ranch."
Explore a reconstructed Mandan Indian village and the military fort where Colonel Custer lived before his famous last stand at Little Bighorn.
The most important fur trade post on the upper Missouri River has been rebuilt to look just like it did in the 1830s when traders and Native Americans met here.
A park celebrating the Icelandic settlers who came to North Dakota in the 1870s, with a pioneer heritage center, nature preserve, and Lake Renwick.
Walk through the remains of Hidatsa earthlodge villages where Sakakawea (Sacagawea) lived before joining the Lewis and Clark expedition.
One of the largest man-made lakes in America, stretching 178 miles along the Missouri River. A great place for fishing, swimming, and watching wildlife.
A long trail winding through the spectacular North Dakota badlands, connecting the north and south units of Theodore Roosevelt National Park.
A quiet park in the heart of the badlands near Medora, perfect for horseback camping and exploring the rugged North Dakota landscape.
Colorful painted canyons and rugged badlands where President Theodore Roosevelt ranched in the 1880s and fell in love with the American West.
An ancient watering hole where animals gathered 19 million years ago left behind incredible fossils of creatures like tiny horses and giant pig-like beasts.
A volcanic ash blanket from 12 million years ago preserved hundreds of complete animal skeletons in place, like a prehistoric Pompeii for animals.
A fun replica of England Stonehenge made entirely from vintage American cars, painted gray and stacked up to match the original stone circle.
A towering rock spire rising from the prairie that was the most famous landmark on the Oregon Trail. Pioneers wrote about it more than any other place on their journey west.
Learn about the brave families who claimed free land on the prairie through the Homestead Act. They had to build a home and farm the land for five years to keep it.
A large state park with a cave featuring ancient petroglyphs carved by Native Americans, plus beautiful Missouri River bluffs covered in hardwood forest.
A beautiful river perfect for canoeing and tubing, with tall waterfalls pouring from canyon walls where six different ecosystems all come together.
Every spring, over half a million sandhill cranes stop along the Platte River during the largest crane migration in the world. The sky fills with birds!
A massive rock bluff that was one of the most important landmarks for pioneers traveling the Oregon Trail. You can still see the wagon ruts today!
Strange mushroom-shaped rock formations and fossils of ancient animals create a landscape that looks like it belongs on another planet.
The highest point in Oklahoma at 4,973 feet sits atop a lava-capped mesa in the far northwest corner of the state, where Oklahoma meets Colorado and New Mexico.
Natural mineral springs, cool streams, and swimming holes in southern Oklahoma that the Chickasaw people have treasured for centuries.
A strange flat landscape of white salt flats where you can dig for unique hourglass-shaped selenite crystals that form naturally in the salty ground.
The largest protected tallgrass prairie in the world, with nearly 40,000 acres of waving grass and a free-roaming herd of 2,500 bison.
A beautiful 77-foot waterfall cascading into a lush green canyon in the Ozark Hills of northeastern Oklahoma.
A peaceful memorial honoring those affected by the 1995 Oklahoma City bombing, with 168 empty chairs representing each person who was lost.
Explore sandstone caves and rock formations in the San Bois Mountains that outlaws once used as hideouts in the 1800s.
A beautiful canyon oasis with natural springs, mesas, and swimming in the middle of western Oklahoma, named after a Cheyenne chief.
The site of a significant and tragic event in the Indian Wars where the U.S. Cavalry attacked a Cheyenne village in 1868.
Ancient granite mountains rising from the Oklahoma prairie are home to free-roaming bison, longhorn cattle, and prairie dogs. Great for rock scrambling!
Dramatic striped rock formations and wide-open prairies where fossils from ancient creatures are still being discovered today.
A sacred mountain rising from the plains that Native Americans have visited for ceremonies for thousands of years. The trail to the top offers incredible views.
A huge state park in the Black Hills with a famous herd of 1,300 bison and scenic drives through tunnels and past granite spires.
Right in downtown Sioux Falls, the Big Sioux River tumbles over beautiful pink quartzite rock in a series of cascading waterfalls.
At the meeting of the Big Sioux and Split Rock rivers, this park marks one of the oldest known places where people lived in the northern Great Plains.
The third-longest cave in the world is filled with sparkling calcite crystals that look like jewels lining the walls.
A fun lake park on the shores of Lewis and Clark Lake where families can swim, fish, and explore the bluffs along the Missouri River.
See a real underground missile silo and launch control center from the Cold War, when the Great Plains were home to hundreds of nuclear missiles.
A stunning limestone canyon with towering walls, waterfalls, and colorful fall foliage in the Black Hills. It was even used as a filming location for movies.
One of the longest caves in the world sits beneath a beautiful prairie where bison, elk, and prairie dogs roam freely above ground.
A vast desert wilderness where the Rio Grande carves spectacular canyons along the Mexican border. It has mountains, desert, and river all in one park.
A biological crossroads where swamps, deserts, prairies, and forests all come together. It has more types of plants and animals than almost anywhere in North America.
Walk along trails where alligators bask in the sun right next to the path! This swampy park south of Houston is one of the best places to see gators in the wild.
A mysterious swamp where huge bald cypress trees draped in Spanish moss grow out of the water. Paddle through bayous and channels in the largest natural lake in Texas.
Red rock canyons at the edge of the Caprock Escarpment are home to the official Texas State Bison Herd, descendants of the famous Goodnight herd.
High mountain scenery in the cool Davis Mountains of West Texas, with a historic CCC-built lodge and trails leading to views of the surrounding desert.
Walk right next to real dinosaur footprints preserved in the riverbed of the Paluxy River! Both meat-eating and plant-eating dinosaur tracks are here.
A massive pink granite dome rising 425 feet above the Texas Hill Country. Native Americans believed the rock was enchanted because of the strange creaking sounds it makes at night.
A beloved Texas Hill Country park on the crystal-clear Frio River, famous for summer swimming, tubing, and the nightly jukebox dance at the pavilion.
Home to the highest point in Texas and an ancient fossilized reef from an ocean that covered the area 260 million years ago.
Swim, tube, and paddle in the gorgeous Guadalupe River as it flows through limestone bluffs and bald cypress groves in the Texas Hill Country.
Huge rock basins that catch rainwater in the desert have drawn people for over 10,000 years, leaving behind thousands of Native American pictographs on the rocks.
A rare stand of bigtooth maple trees puts on a spectacular fall color show in the Texas Hill Country, with rocky canyons and the clear Sabinal River.
Visit the ranch where President Lyndon Johnson was born, grew up, lived, and is buried in the beautiful Texas Hill Country along the Pedernales River.
Huge sand dunes up to 70 feet tall in West Texas where you can surf down the sand on discs! The dunes stretch for miles across the desert.
The longest undeveloped barrier island in the world stretches 70 miles along the Texas coast, with beautiful beaches and endangered sea turtles.
The second-largest canyon in the United States has colorful red, orange, and white rock layers. It is called the "Grand Canyon of Texas."
Four beautiful Spanish missions along the San Antonio River, built in the 1700s, tell the story of Spanish colonial life and the Native people who lived there.
The tallest monument column in the world marks where the Battle of San Jacinto was fought in 1836, winning Texas independence from Mexico in just 18 minutes.
Deep limestone canyons near the Rio Grande hide some of the oldest rock art in North America, with paintings made by people over 4,000 years ago.
Let the child heart places that create real curiosity, compare two landscapes or histories, and choose one attainable family visit. At the park, use three to five observations for younger children and a field note or evidence-backed explanation for older children. Missing an item is a reason to ask a question, never a reason to approach wildlife or leave an allowed route.
Try the family wishlist demonstration · See the complete outdoor-learning model