Bob Tillman was a Silicon Valley executive when he went looking for a vineyard, and what stopped him cold was elevation. He found a steep ridge on the westside of Paso Robles climbing toward 1,800 feet, cold at night, soaked in afternoon sun, with the bones of limestone underneath, and he bought it. Alta Colina, the high hill, was founded in 2003 and planted in 2005 to eight Rhone grapes. Today Bob and Lynn Tillman run it with their daughter Maggie, a fixture of the Paso Rhone scene, and winemaker Dallas Parnigoni shapes the fruit into Syrahs with rare poise.

A family that bet on a hill

Alta Colina is a genuine family winery, not a brand dressed up as one. Bob Tillman, who came to wine after a career in technology, fell for this high Adelaida ridge for its elevation and what he saw as unlimited potential for quality. He and his wife Lynn founded the estate in 2003 and planted in 2005, and their daughter Maggie has become one of the most recognizable voices for Rhone wine in Paso Robles, telling the family’s story on podcasts, radio, and in the tasting room.

The winemaking is in the hands of Dallas Parnigoni, who works the estate fruit with a light, balance-seeking touch. The family’s signature, Old 900 Syrah, carries history in its name: Old 900 was the airplane Maggie’s grandfather flew during World War II. That kind of personal thread runs through everything here, a winery built by people who live on the land they farm and pour the wine they make.

The flagship Old 900 Syrah is named for the airplane Maggie Tillman’s grandfather flew in World War II.

Eight Rhone grapes on a cold westside ridge

The estate is all about altitude. The vineyard climbs a high ridge in the Adelaida District and peaks near 1,800 feet, which in Paso terms means cold nights and a dramatic daily temperature swing. The Adelaida District itself runs from roughly 900 to 2,200 feet across the Santa Lucia Range, with shallow calcareous limestone soils, and Alta Colina sits squarely in that cool, rocky, high-elevation sweet spot.

This is Rhone country by design. The Tillmans planted eight Rhone varieties, the reds led by Syrah and Grenache and the whites built around aromatic grapes that thrive in the cold air. The Templeton Gap pulls marine air inland each afternoon, and at this height the diurnal swing is severe, ripening the fruit slowly while locking in acidity. The farming leans sustainable and dry, pushing the roots into the limestone and concentrating flavor. The wines that come off this ridge are known for being bold and balanced at once, a combination the elevation makes possible.

Syrah with backbone, whites with lift

Syrah is the headliner, and Alta Colina makes it in more than one register. The estate bottlings tend toward dark fruit, black pepper, cured meat, and a streak of crushed stone, generous but built to age rather than to overwhelm. The Old 900 series sees more oak influence and reads richer and deeper, yet the cold-site acidity keeps it from tipping into heaviness. These are Syrahs for people who want power with a pulse.

The Grenache and Rhone red blends bring brighter red fruit, garrigue, and a savory snap, while the estate whites and rose are a quiet highlight, gorgeous, high-toned wines that show off what a cold ridge can do for aromatic Rhone grapes. Across the lineup the house signature is balance: ripe but lifted, structured but never clumsy, wines that taste of a specific high place rather than a generic warm-climate template.

What to pour Alta Colina with

Syrah and fire belong together. Pour the estate Syrah or Old 900 alongside red-oak-grilled tri-tip, lamb chops, or a peppered steak, and let the chemistry work: the wine’s firm tannin binds to the protein and fat of the meat, softening the wine while the char echoes the Syrah’s smoky, savory edge. The wine’s acidity, a gift of the cold ridge, cuts through the richness so the last bite tastes as fresh as the first. Go gentle with chile heat, since heat amplifies the perception of alcohol in these ripe reds.

The Grenache and Rhone blends are friendlier with herb-roasted chicken, sausages, and tomato-driven dishes, where their bright acid matches the acidity in the food. Save the estate whites and rose for the patio with grilled vegetables, goat cheese, or anything from the sea, the high acid cutting cleanly through richness. To match a specific dinner to the right Alta Colina bottle, try our wine pairing generator.

Visiting Alta Colina

A visit to Alta Colina takes you up into the high westside hills, and the most memorable feature on the estate is the Trailer Pond, a secluded campsite of restored vintage trailers tucked into the vineyard that earned a Sunset Magazine Best of the West travel award. Whether you come to taste or to stay, the setting is the point: working Rhone vineyards on a cold ridge with long views over the Adelaida District, and a family who genuinely loves to talk wine. The Tillmans also host dinners and events on the property and around California through the year. Tastings are best arranged by reservation, so confirm current hours with the winery before you visit, and use our Paso Robles guide to plan the rest of your trip through the region.

Alta Colina Vineyard & Winery: common questions