Rock of Ages

Explore the campus of Caltech for geological secrets

Caltech campus wander

It’s not easy to tap into the mind-body connection. But it’s definitely possible if you wander the campus of one of the world’s top scientific institutions, Caltech. It has a best-kept geological secret, discovered on this 1.75-mile out-and-back walk.

Find street parking at the southwestern corner of Caltech (we recommend along San Pasqual between Catalina and Wilson Avenues), take a picture of the campus map, and head south along Wilson toward Mudd Hall, home of the Geological Sciences Department and a world-class seismology lab. (Throughout the walk, look for busts and plaques denoting famous scientists and their groundbreaking work here over the years.) Head east through a floral garden with bonus sculptures, passing the Arms Laboratory, which has a gem room, home to a myriad of minerals and ancient volcanic rocks and even a saber-tooth skeleton display. Continue to the tallest building on campus—Milliken, home to a top-floor library—for expansive views of Pasadena and the San Gabriels.

Walk east past the spaceship pond where, if you’re lucky, robotics students might be testing equipment, and on to the top of the Throop Memorial Garden. This beautiful oasis sees a smattering of ponds amid trees, with benches and plentiful rocks. Look out for loads of local turtles basking in the sun, or egrets looking for lunch.

Most importantly, check out the plaque on the boulder at the base of the garden: You’ve just walked through 2 billion years of geological history! The prehistoric rocks are grouped by age and type and come from local sources, such as pink granite from Echo Mountain. You can spend hours here, but when you are ready, walk east toward the Athenaeum (named after the Greek god of wisdom), a stately building with fine dining and a swanky bar.

Circle back to Milliken and head north toward Beckham Auditorium. Fondly nicknamed the “Wedding Cake” by students, this building is surrounded by light fixtures shaped like atoms. Be sure to look at the serene “Gene Pool,” whose name will become obvious when you look closely at the tile pattern (we won’t give it away here). 

undefined

BONUS FOOD & DRINK: Grab a bite at Cross St. Café. Known as “Pencil” at their old location, owner Snow and her team have been satisfying locals for years with home-made sandwiches (spicy roast beef with kimchi is a must!), Korean food (try the rolls or bulgogi cupbap), and refreshing juices (we love their mango lemonade). {Covid-19 update, June 2020: Cross St. Café is currently open for Takeout only.}

To get to Caltech and nearby street parking, take the I-210 to the Lake Ave. exit and exit south. Head east on Corson St. for 3 blocks before turning right onto Wilson Ave. After heading south for 1 mile, you will reach San Pasqual Ave. Turn right and find street parking (2 hours, except Sunday). *Covid-19 Update (June 2020): Please be sure to follow all health and safety guidelines provided in county ordinances, and respect signage and regulations on-site. Honoring health safety works to mitigate Covid-19, and allows a better chance of keeping outdoors access open. Dog-friendly!

Story and photos by Matt Pawlik.

Trending Stories NorCal

View all Stories
  1. Perles Beach Angel Island San Francisco Bay

    Secret Beach

    A hidden beach and a killer view? Those are hard to come by, but that’s exactly what you’ll get at Perles Beach on Angel Island. Bike or hike to this beautiful pocket cove.

    View
  2. Cinematic Sonoma

    Longer days. Golden light. Wildflowers in bloom. It’s the perfect moment to plan your spring escape to Sonoma for the Sonoma International Film Festival, March 25–29. No fuss. No sprawl. Just films, friends, fresh air, and that unmistakable Sonoma glow.

    View
  3. Hike Pescadero Marsh Natural Preserve

    Mellow in the Marsh

    Beach, birds, ice plant popping purple flowers: That’s a hiking slam dunk! Hike about 2 miles at Pescadero Marsh Natural Preserve using their easy to navigate (well-signed) Sequoia Audubon Trail.

    View
  4. A man is looking through his binoculars at sunrise at the Bayland Nature Preserve in Palo Alto

    Baylands Bird & Art Loop

    Combine an outdoor art walk and wildlife sightings at the Baylands Nature Preserve in Palo Alto. This 5-mile loop through Byxbee Park and the Emily Renzel Wetlands features striking installations by artists Peter Richards and Michael Oppenheimer—where the landscape itself becomes part of the canvas.

    View

Trending Stories SoCal

View all Stories
  1. Tree Town

    Home to an estimated 21,000 trees and 100 acres of parkland, South Pasadena has earned its nickname: the City of Trees. This 2.5-mile neighborhood walk lets you experience its leafy canopy up close, winding through charming streets and three of the city’s beloved parks.

    View
  2. A Better Way to Baldwin

    The Baldwin Hills Scenic Overlook in Culver City is one of West L.A.’s most popular hiking spots, but most visitors miss the bigger picture. This 3.5-mile out-and-back along a section of the Park to Playa Trail offers a fuller experience of this gorgeous nature park with sweeping urban views and a few artistic surprises along the way.

    View
  3. Sponsored

    Warm Up to Winter in Reno Tahoe

    2026 is just getting started, but there’s one place already rising to the top as the best for adventure and relaxation: Reno Tahoe. The awe—and ahhhs—begin as soon as you arrive. G

    View
  4. A woman standing at the pond's edge at Ernest B Debs Regional Park in Los Angeles. Trees are making reflections on the pond.

    Urban Oasis Loop

    Home to the city’s Audubon Center, Ernest E. Debs' 282-acre park features a robust network of hiking trails and surprising wildlife diversity. More than 140 bird species have been spotted here. Birdwatcher or not, this 2.5-mile route makes for a gorgeous outing.

    View