With a father like Tom Walls, former owner of Trinity Grille in Denver, it’s no surprise that his son, Dillon Walls, jumped into the restaurant business as well.
“I went to CU and graduated from there, and I was like I don’t want a real job yet,” Dillon jokes. “So I took off and jumped down to Australia to use as a jump-off point for traveling to the rest of Southeast Asia, and I got to Sydney and was like, I don’t need to go anywhere.”
It was there that he earned his master’s degree while living there for four years before returning to Colorado to join the family business.
Owning restaurants like Trinity Grille, Castle Cafe, and Next Door Bar, Dillon’s family had years of experience, and he was ready to take the reins.
“I ended up in San Miguel de Allende, a tiny little town a couple of hours north of Mexico City,” Dillon explains. “It’s an UNESCO World Heritage Site, a colonial Spanish town, just as cool as could be.”
“So I went to a wedding there,” he continues. “And rented an Airbnb that had been built in like the 1620s or something like that, and I was like, this is going to be a restaurant…so that’s basically what manifested here.”
Dillon wanted something with a traditional Mexican vibe and an inviting interior, and Bien y Tú offers precisely that. From the lavish ferns that span the depth of the restaurant to the stained glass and outdoor patio, walking in feels like stepping into Mexico itself.
“The basis for the concept was a real colonial Mexican base with a kind of Tulum feel draped over the top,” Dillon says.
While it took some time to come to fruition due to COVID-19 delays, the finished product of Bien y Tú now graces Fourth Street in Downtown Castle Rock, having been open since March 2025, bringing exquisite Mexican cuisine to the area.
“Our philosophy has always been, of course, have a beautiful interior, but you’ve got to have the food that gets people back in,” Dillon explains. Bien y Tú has no problem there with their mix of culinary backgrounds from France and Mexico. Together, the usual Mexican foods get a dash of spectacular, like the quesābirriā tacos that showcase a German cheese or Dillon’s favorite, the enchiladas with a mushroom cream sauce.
When asked why open Bien y Tú in Castle Rock, Dillon’s answer is simple. “Castle Rock’s been so good to us.” Now Dillon wants to return the favor.
Bien y Tú does just that with their mix of culinary backgrounds from France and Mexico. Together, the usual Mexican foods get a dash of spectacular, like the quesābirriā tacos that showcase a German cheese or Dillon’s favorite, the enchiladas with a mushroom cream sauce.