Calpine Geothermal Visitor Center

Along Highway 101

The Geysers is the largest geothermal energy complex in the world, generating 850 megawatts of clean, renewable energy. Check out operator Calpine's visitor center in Middletown, which runs occasional tours to the nearby facilities.

Lonely Planet's must-see attractions

Nearby Along Highway 101 attractions

1. Langtry Estate Vineyards

5.11 MILES

This winery has a stunning location on a hilltop overlooking the lake with picnic tables available for anyone who wants to pack a lunch. Visitors can opt…

2. Robert Louis Stevenson State Park

6.08 MILES

At this undeveloped state park 8 miles north of Calistoga, the long-extinct volcanic cone of Mt St Helena marks Napa Valley’s end. It's a strenuous 5-mile…

3. Vincent Arroyo

10.22 MILES

The tasting room is a garage, where you may even meet Mr Arroyo, known for his all-estate-grown Petite Sirah and Cabernet Sauvignon. They're distributed…

4. Old Faithful Geyser

10.27 MILES

Calistoga’s miniversion of Yellowstone’s Old Faithful shoots boiling water 30ft to 80ft into the air, every 10 to 20 minutes. The vibe is pure roadside…

5. Hanna

10.62 MILES

Abutting oak-studded hills, Hanna’s tasting room has lovely vineyard views and good picnicking. At the bar, find estate-grown Sauvignon Blanc, Malbec,…

6. Soda Rock Winery

11.19 MILES

Come to Soda Rock to behold Lord Snort, a 20,000lb metal boar sculpture displayed out front, and stay for the big Bordeaux varietals, including Cabernet…

7. Hawkes

11.6 MILES

Hawkes makes an easy stopover while you’re exploring the valley, and offers private barrel tastings in which guests sample straight from the oak and order…

8. Olabisi Wines

11.67 MILES

In downtown Calistoga, this tasting room run by a long-time winemaker specializes in extremely small-production wines produced with wild yeast. The big…