This small Napa Valley town sits on a volcano — and you can feel it the moment you arrive

California’s hottest little town up north

At the top of Napa Valley, about 75 miles north of San Francisco, a town of 5,200 people sits on top of one of the most geologically active patches of ground in California.

Geothermal forces heat water deep underground, push it back to the surface as hot springs, and keep a geyser erupting like clockwork.

The same volcanic energy that petrified an ancient redwood forest 3.4 million years ago is still running the show. You’ll feel it the moment you arrive.

The Wappo people knew this place first

Long before Sam Brannan showed up with money and big plans, the Wappo people had been living here for roughly 8,000 years.

They called the area “Nilektsonoma,” meaning “Chicken Hawk Place,” and they used the natural hot springs as healing grounds.

Brannan, California’s first millionaire, arrived in 1859, bought more than 2,000 acres, and set out to build a resort modeled after Saratoga Springs, New York.

According to legend, he fumbled the name at a grand speech and said “Calistoga of Sarafornia” instead. The slip stuck.

Brannan’s resort and the railroad that followed

The resort opened in 1862 with a bathhouse, guest cottages, landscaped parks, and a racetrack. Six years later, the Napa Valley Railroad reached Calistoga, connecting the town to San Francisco by ferry and rail.

Visitors could step off a boat in the city and arrive at a hot springs resort the same day. The Calistoga Depot Brannan, built in 1868 still stands on Lincoln Avenue.

It’s the second-oldest train depot in California and a state historical landmark.

One geyser, erupting every half hour

Drive out to 1299 Tubbs Lane and you’ll find Old Faithful Geyser of California, one of only three regularly erupting geysers on the planet.

The National Geographic Society put it in that short list alongside Yellowstone’s Old Faithful and New Zealand’s Pohutu Geyser. Every 15 to 45 minutes, hot water and steam shoot up to 60 feet into the air.

The eruption lasts several minutes.

Scientists also track it as a possible earthquake indicator: shifts in the timing can signal seismic activity within a few hundred miles.

Fainting goats, bocce, and deep time

While you wait for the next eruption, there’s enough to keep you busy. A small geology museum explains the geothermal forces at work beneath your feet.

Picnic areas spread across the grounds, bocce courts are open to use, and a little animal farm houses Tennessee fainting goats, pygmy goats, and a pair of guard llamas.

When the geyser finally blows, the timing can shift depending on rainfall and seismic activity, so no two visits run exactly the same.

Stone trees from 3.4 million years ago

About a mile outside town, a half-mile trail winds through one of the most unusual forests you’ll ever walk.

Mount St. Helena erupted 3.4 million years ago, knocked down an ancient redwood forest, and buried it under thick ash.

With no oxygen to rot them, the trees mineralized slowly, silica replacing wood cell by cell over thousands of years. A Swedish homesteader named Charles Evans found them in 1870.

The largest tree here, called the Queen, runs 65 feet long and 8 feet wide.

Robert Louis Stevenson walked these same trails

In 1880, the author of “Treasure Island” honeymooned in Calistoga with his wife, Fanny Vandegrift.

They stayed at the Calistoga Hot Springs Hotel before moving to an abandoned cabin at the Silverado Mine on Mount Saint Helena.

Stevenson kept notes the whole time, and the journal became “The Silverado Squatters,” a book that describes the hot springs, the petrified forest, and the valley around him. A tree at the Petrified Forest carries his name.

The state park atop Mount Saint Helena, where the couple spent that summer, climbs to a 4,339-foot summit with views stretching across Napa Valley and into Sonoma County.

The mill that fed a valley before the Gold Rush

Edward Turner Bale built the Bale Grist Mill in 1846, three years before California even became a state. The 36-foot waterwheel still turns, still grinds, and still runs on the same French Buhr millstones Bale installed.

In the 1800s, Napa Valley farmers hauled their wheat and corn here to be ground into flour. The mill was the social center of the valley.

On weekends, you can watch a milling demonstration and walk out with a bag of stone-ground cornmeal or polenta.

A 1.2-mile History Trail connects the mill to Bothe-Napa Valley State Park, passing through a Pioneer Cemetery on the way.

Redwoods you won’t find anywhere else this far inland

Bothe-Napa Valley State Park sits between Calistoga and St. Helena across 1,900 acres, and it holds something no other California state park can claim: the farthest-inland coast redwoods in the state.

The Redwood Trail follows Ritchey Creek through towering trees, ferns, and mixed-evergreen forest at a pace that feels nothing like a workout.

If you want more of a climb, the Coyote Peak Trail takes you up to a summit with open views of Napa Valley and Mount Saint Helena. In summer, the park also has a swimming pool.

An old mine road carved into the rock

The Oat Hill Mine Trail stretches 8.3 miles along a former stagecoach road built in 1873 to haul mercury from quicksilver mines in the hills.

Wagon-wheel ruts pressed into soft volcanic rock are still visible in places, and hand-laid stone walls line sections of the route. The lower stretches look out over Napa Valley’s vineyards.

Higher up, the trail crosses volcanic rock formations and passes through oak, Douglas fir, gray pine, and cypress.

It’s free, open to hikers, mountain bikers, and horseback riders, and worth every step in spring when the wildflowers are out.

A Disney animator built the town’s best museum

Ben Sharpsteen spent more than 30 years at Walt Disney Studios, working on Snow White, Pinocchio, Fantasia, and Dumbo, and picking up 11 Academy Awards for the studio along the way.

After retiring, he moved to Calistoga, where his family had held property since the late 1800s, and started building a museum in 1976.

The centerpiece is a 30-foot diorama of Sam Brannan’s 1860s resort, complete with a working model train running through a miniature Chinatown and railroad depot. Admission is free, with a suggested donation.

A main street that kept the chains out

Lincoln Avenue has shops, art galleries, wine tasting rooms, and restaurants on both sides, and by law, not a single fast food franchise among them. Calistoga bans chain restaurants outright.

Historic murals on downtown buildings show what the street looked like when horses were the main mode of transportation.

Sam’s General Store operates from the last cottage still standing in its original spot from Brannan’s resort era.

In 2001, the National Trust for Historic Preservation named Calistoga a “Distinctive Destination” for how well the town has held onto its character.

Fire, mud, and a town that keeps coming back

The 2017 Tubbs Fire started near Calistoga and forced nearly all 5,200 residents to evacuate. Three years later, the 2020 Glass Fire did the same.

The town rebuilt and, in 2024, installed a hydrogen fuel cell facility capable of keeping the grid running for at least 48 hours during outages.

Through all of it, the hot springs kept flowing, the geyser kept erupting, and the mud baths kept drawing visitors. Only two-lane roads lead into Calistoga, which keeps the crowds thin.

It’s still the quieter end of Napa Valley, and that’s exactly the point.

Explore Calistoga, California

Calistoga sits at the northern tip of Napa Valley, about 75 miles north of San Francisco via Highway 29 or Highway 128.

The closest major airports are San Francisco International (SFO) and Oakland International (OAK), each about 90 and 77 miles south, respectively. Once you’re in town, Lincoln Avenue is walkable.

Old Faithful Geyser is at 1299 Tubbs Lane, open daily 9 a.m. to 5 p.m. The Petrified Forest is at 4100 Petrified Forest Road, open daily 10 a.m. to 5 p.m.

The Sharpsteen Museum at 1311 Washington St. is open noon to 3 p.m. weekdays and 11 a.m. to 4 p.m. on weekends, free with a suggested donation. Bale Grist Mill operates Saturdays and Sundays, 10 a.m. to 4 p.m.

This article was created with AI assistance and human editing.

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