It’s not every beach stroll that leads to a modernist masterpiece, let alone one set in the sea amid crashing waves.

After a bracing walk along the esplanade beside Ondarreta Beach in San Sebastian, Spain, I coaxed my family to keep going until we arrived at the western edge of La Concha Bay. There, anchored into the rocks and bashed by waves, was the 20th-century Spanish sculptor Eduardo Chillida’s “El Peine del Viento” (“The Comb of the Wind”): three 9-ton, rust-covered sculptures. They resembled monumental claws or talons reaching out, trying to connect — a potent symbol of Basque endurance over the centuries.

It was also a sign to my husband and 11-year-old twins, Freddie and Frida, that we would be spending the weekend seeking out art in some unusual places.

With its wildly vertiginous and verdant landscape and proud heritage, the Basque region has long been a place I’ve wanted to explore with my family. So in February, we spent three crisp, sunny, culture-focused days driving from San Sebastian to Bilbao with several worthwhile stops in between.

By the second day, my kids didn’t want our adventure to end.

San Sebastian

Driving into town earlier that day, past the grandly ornate buildings lining the final stretch of the Urumea River before it reaches the sea, Freddie declared San Sebastian “pretty cool” when he spied groups of kids carrying surfboards and heading toward the beach as they dodged fur-coat-clad shoppers hurrying along the sidewalks. With its world-­renowned culinary scene, film festival and stunning natural setting on a crescent-shaped cove, San Sebastian can tick a lot of boxes for visitors with widely varying tastes. Even in February, the beach was buzzing, although only surfers in wet suits and dogs chasing sticks ventured into the water.

The city’s museums were alive with a similar mix of youthful energy and old-school European cultural appreciation. Tabakalera, a giant multipurpose art space inside a former cigarette factory, features exhibitions, film series and huge open-space lounges — some with table tennis and other amusements. It’s a place where kids can be exposed to accessible culture, but still have room to run around. There is also a vast library, a pizzeria and, on the top floor, a restaurant called LABe run by students at the Basque Culinary Center, so it can be a full-day experience.

On a rainy day, Tabakalera could be a lifesaver for a visiting family. But it was sunny during our visit, and the city’s cathedral, with its vast expanses of jewel-toned stained glass, was especially beautiful. This summer we’ll be making a trip back to San Sebastian — both to swim in that beautiful cove and to see the Lighthouse, a monumental sculpture inside a derelict lighthouse on the city’s picturesque Santa Clara Island. Spanish artist Cristina Iglesias dug up the floor of the structure and recreated in bronze the geological features of the rock beneath it. Reached by boat, it’s only open from June through late September.

Unexpectedly, the San Telmo Museum, which we assumed would be a display of regional pride, turned out to be a highlight of our trip and, like the city itself, had something for everyone. Although one enters through a small, minimalist glass-and-concrete pavilion, the museum is built around a staggeringly beautiful Gothic monastery cloister with elaborately carved stone arches. Opening a side door to the dark and moody chapel, I was blown away to discover vast murals by one of my favorite Spanish artists, Jose Maria Sert, whose best-known works were sometimes painted on gold or silver leaf, and are more typically encountered in glamorous settings like Rockefeller Center or the palatial homes of wealthy clients rather than somber monastery chapels.

Around the corner were shimmering suits of armor, swords, maces and other weapons, which Frida — currently enamored of all things medieval — explained to us in all their lethal goriness.

Freddie’s most frequent question upon entering a museum is: “Do they have any cars?” Indeed, this museum did — groovy 1970s ones (along with scooters and bicycles). The vehicles highlighted the Basque region’s role in modernizing Spanish society from the 1960s to the ’80s, during the final years of the Franco dictatorship and the beginning of the country’s democracy. Going further back in time, a display of more than a dozen examples of the bizarrely elaborate 17th-century linen headwear traditionally worn by married and widowed women had Frida perplexed enough to declare (and not for the first time) that she would never marry.

Driving west

The seaside hamlet of Getaria, about 30 minutes west of San Sebastian, may be tiny, but it gave the world two titans who changed history in one fashion or another. The first was Juan Sebastiano Elcano, the Spanish explorer who completed the first circumnavigation of the globe in 1522 after Ferdinand Magellan was killed midvoyage in what is now the Philippines. He made it back to Spain after some 1,200 days at sea, returning with just one ship and only 19 men (five ships and some 265 crewmen departed Spain in 1519). He is a celebrated hero in his homeland, but is largely unknown outside Spain, where credit for the voyage goes almost entirely to Magellan.

In contrast, Getaria’s other native son has a name that is known far and wide and has become a global brand. Cristobal Balenciaga — the couturier whom Christian Dior, Coco Chanel and other designers considered, in Dior’s words, “the master of us all” — was born here to a local fisherman and a seamstress in 1895. By his teens, he had clients among the Spanish nobility and eventually the royal family. He moved to Paris during the Spanish Civil War, where his talent and list of clients became legendary.

To great fanfare, the Cristobal Balenciaga Museum opened in Getaria (in the former palace of his most ardent early client) in 2011, bringing the rarefied world of haute couture to this quaint village. Many of the stunning dresses on display were donated by the likes of Princess Grace of Monaco; American philanthropist Rachel Mellon, known as Bunny; Balenciaga’s friend and protege, Hubert de Givenchy; and other beau monde figures. It’s a fun romp for kids through the dimly lit galleries of fanciful clothing from a different age. This year’s exhibition, “Balenciaga Character,” focuses on the essence of his designs and what made them so innovative and beautiful that other designers felt almost obligated to follow his lead for decades.

Bilbao

Ever since the Frank Gehry-­designed Guggenheim Bilbao opened in 1997, the city has occupied an important perch on the European cultural travel circuit. Many kids will go bonkers over the giant floral puppy, a large petunia-based sculpture by Jeff Koons that stands in front of the museum. If you’re visiting in the summer, you’ll want to know about the nearby “water park,” a fountain with variable jets of water spouting from the ground, where children and adults can cool off in the midday heat.

Whatever exhibitions are on view (until May 28, there’s a beautiful Joan Miro painting exhibition focused on the artist’s early years in Paris), a ride up the glass elevators in Gehry’s torquey, bendy central lobby is enough to satisfy most kids. Do not miss the long gallery of monumental spiral sculptures by Richard Serra; exploring the mazelike spaces created by the circular steel walls is, I’ve found, a home run for children.

By the time we got to Bilbao’s maritime museum, Itsasmuseum, we were pretty exhausted, and I told the ticket seller we’d be in and out in 30 minutes. In the end, the guards had to move us out at closing time as we were so engaged with the displays of antique model ships and paintings of historic shipwrecks. There are also more modern exhibitions about surf culture and the role of the river and the sea in Bilbao’s development, as well as what’s being done in the city to adapt to global warming and preserve the ecosystem that’s been its lifeblood. In warmer weather, a small dry dock in front of the museum allows visitors to explore various types of vessels in use on the city’s waterways.

Like San Sebastian, Bilbao has its own vast multipurpose cultural center in the Azkuna Zentroa Alhondiga, a former wine and olive oil warehouse that sat empty for 30 years until architect Philippe Starck re-imagined it as a library, exhibition space and gym, where there are two indoor pools on the roof that anyone can visit for a few euros per day.

And splashing around in pools designed by Starck — one of which has a glass floor that looks down on the galleries below — counts as a cultural activity, no matter your age.

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