Forestiere Underground Gardens 

The Forestiere Underground Gardens, located at 5021 West Shaw Avenue in Fresno, California, are a series of subterranean structures built by Baldassare Forestiere an immigrant from Sicily, over a period of 40 years from 1906 to his death in 1946. The history of the Underground Garden is interesting, ie; Baldassare Forestiere immigrated to the United States in 1901 and eventually moved to the Fresno area to accumulate enough money to purchase land where he wanted to grow citrus. As someone with limited skills, he worked as a day laborer digging ditches, etc. He accumulated sufficient funds to allow him to purchase 80 acres (one dollar per acre) in 1906 and he worked on his underground complex for the next 40 years until his death in 1946.

Bear in mind that this really isn't a "garden" in the true sense of the word, it is comprised of various citrus trees (as well as some exotic fruits) located in numerous underground rooms. His dream was to be a citrus grower and he worked tirelessly at developing techniques for caring for various types of citrus trees. The trees have been grafted to bear more than one kind of fruit, allowing for a larger variety to be grown throughout the space.

Yosemite National Park to Bear Valley   Map

After doing some map research, we had decided to take a somewhat different route to Santa Barbara, where we drove west on route 120 to Groveland and then turned south on route 49 through Mariposa. On the way to Mariposa, we passed through an area known as "Bear Valley" where the famous John C. Fremont used to own several gold mines.

As you can see in these images, this part of California is desolate and the marker for the Fremont Fort marks the location where John C. Fremont built a fort to protect his gold mines. This part of California history is fascinating, click here to read the full story on Wikipedia.
Click here to read the John C. Fremont Wikipedia Page, as this person was a very successful explorer & adventurer and was intensely active in California's history.

Breakfast in Mariposa   Map

Our original idea for breakfast was to have stopped in Groveland on route 120 before we turned south on route 49. However, we discovered that either we were there way too early, or COVID had closed everything up - so we kept driving until we got to Mariposa.

As can be seen in these images, Mariposa is not a large town (population 1,186) but they have one of the best donut shops we've been to in a while! Donuts A-Go-Go has excellent coffee and a nice range of donuts and other pastries. The staff we interacted with were very nice and fun to talk to !

Quick History: When California was formed in 1850, Mariposa County was one of the original 27 counties and covered one-fifth of the entire state. The County was reapportioned to create all of parts of 11 other counties giving rise to the nickname the "Mother of Counties."

Once we had our donuts & coffee and checked the rental car over, we pushed on towards Fresno on route 99 with the goal of reaching Santa Monica by late afternoon.

Image Credits
  • Image # 1 is the property of Just Traveling Thru, LLC.
  • The image of the car on the Mariposa Main Street is the property of Bobak Ha'Eri via Wikipedia Commons.
  • All other images are the property of the Mariposa County Website.
Exploring the Forestiere Underground Gardens   Map

A visit to the Underground Gardens was not originally in our game plan for this part of the trip, but while we drove south on California Route 99, Celeste was researching where we could have lunch and also seeing what else would be interesting to see in the same area. She found an article on the Underground Gardens and as we discussed it, it seemed like a fun & unique thing to do.

There are so many amazing facts about Baldassare Forestiere and how he created this underground garden, but you have to first remember that this entire excavation was created while he wasn't at his day job. Fresno's day time temperatures are generally high, and even though his excavations took place at night, remember that he was working in the evening, tired and by himself.

The underground gardens feature nearly one hundred chambers, passageways, courts and patios. Fruit-bearing trees planted below the ground protrude through openings at ground level. Forestiere resided here, benefiting from cooler temperatures during the high heat of the California Central Valley in summer as well as warmer conditions within the ground during winter.

The dirt that Forestiere excavated was moved to create the large structure was utilized elsewhere to fill planters, create stones placed within the catacombs, and to level out other parts of the land. The pathways and rooms were constructed with various widths to help direct airflow by creating pressure as it moves through narrower portions and maintain movement as it bounces off the slants and curves of the cavernous walls. The conical skylights allow for the hot air to be pushed out more quickly and the cool air to remain below.

One interesting note to remember - Forestiere had no formal training with plants, or citrus farming or tunneling! Combine that thought with the fact that he was illiterate, so everything he learned was from "try it and see" or via discussions with other growers.

Forestiere Underground Gardens Citrus/Fruit Plants

The garden's plants and trees, some of which are over 100 years old, are protected, by virtue of construction, from the frost in the winter months. Each level was planted at different times, so they bloom in succession, in order to lengthen the growing season. The garden houses a variety of fruit ranging from citrus and berries to exotic fruits like the kumquat, loquat, and jujube. The trees have been grafted to bear more than one kind of fruit, allowing for a larger variety to be grown throughout the space. Trees and vines were also planted above the dwelling, acting as insulation and forming canopies that provide protection from the elements.

Forestiere Underground Garden Tour

The Garden Tour requires reservations, and once your group is taken inside to the shop, you will then be taken to the main ballroom where the tour guide will give you the history of Baldasare Forestiere and his amazing underground garden. The tunnel goes through his living areas and many of the plants growing areas as well. The tour & guide was very informative and you will be glad you came there.

The Forestiere Underground Garden is listed on the National Register of Historic Places, and is also registered as No. 916 on the list of California Historical Landmarks.

 Camera Equipment Utilized 
Nikon P-950
GoPro 9
  • California Road Trip Overview Page: This page will give you a view of the entire trip, including maps and other information regarding each of our destinations; click here to read more.
  • San Francisco: our arrival airport as well as our first adventure in California - we explored it via walking, cable car as well as uBer. Click here to view our San Francisco page.
  • Bonita Point & Sausalito: We visited this area as we drove north from San Francisco to wine country. Click here to view our Bonita Point & Sausalito page.
  • Santa Rosa / Sonoma County: This is the heart of Sonoma Wine Country, and we explored this area with enthusiasm. Click here to view our Santa Rosa / Sonoma County page.
  • Muir Woods National Monument: One of the few Coast Redwood Forests remaining, the trees are stunning. After hiking about, we headed north through Muir Beach & Stinson Beach. Click here to view our Muir Woods National Monument page.
  • Rush Creek Lodge & Spa: . A beautiful place to stay, right on California Route 120 at the western edge of Yosemite National Park. Click here to view our Rush Creek Lodge & Spa page.
  • Yosemite National Park: A large and beautiful park, with amazing geography. Click here to view our Yosemite National Park page.
  • Forestiere Underground Gardens, Fresno, CA: We discovered this interesting place as we were searching for a good lunch spot in Fresno. The way it was built, and how the builder created such a fascinating home was well worth the time we spent there. Click here to view our Forestiere Underground Gardens page.
  • Santa Monica, CA: The fires in Sequoia National Park forced us to revise our trip route plans, so we added an overnight stay in Agoura Hills in order to visit Santa Monica. Click here to view our Santa Monica page.
  • Santa Barbara, CA: This was the start of our "coastal drive" through California, and this city is such a great place to start such a drive. Click here to view our Santa Barbara page.
  • Coastal Highway, CA: Even though we were looking forward to seeing Monterey, part of our enthusiasm was due to being able to drive north on California SR-1 highway. Click here to view our Coastal Highway page.
  • Monterey, CA: Somewhat of a "living museum" but now adjusting to life as a "tourist destination", this is a neat town that has a split personality, ie; one part bayside beach tourist town and the other part a typical California beach town where residents live. Click here to view our Monterey page.
  • Carmel-by-the-Sea, CA: This was a day trip drive we took to Carmel-by-the-Sea as we drove south to hike at Point Lobos. Click here to view our Carmel page.

Visit our Instagram Page

Disclosure: Some of the links on this page are Affiliate Links, meaning, at no additional cost to you, that we will earn a commission if you click through and make a purchase. So we would appreciate any click throughs, if you are inclined.

Note: All images on this page are the property of Just Traveling Thru, LLC unless otherwise noted.

Note: If you are interested in our European Tips & Warnings, Click here. Or to take a look at our methods for Trip Planning click here.

To view our entire set of images from our Forestiere Underground Gardens visit, click here

 Visit our Store 

 Visit our Favorite Charity 

To review any of our content, make suggestions and/or comments, please click the "Info" menu button at the top of this page. You will find our "Contact Us" link on that drop-down menu.