While Blake Shelton was getting ready for his show at St. Louis's Scottrade Center Saturday night (Feb. 24), his girlfriend, Gwen Stefani kept herself busy exploring the city pre-concert.

According to local news, Stefani recruited her oldest child, 11-year-old Kingston, to be her sightseeing buddy while Shelton took care of business. Mom and son visited the City Museum, then headed over to the Cathedral Basilica of Saint Louis, a 104-year-old structure containing some of the largest mosaics in the western hemisphere. Stefani marveled at its beauty, and tweeted she wished she had been able to stay for Catholic mass.

That wasn't all St. Louis saw of Stefani, however. The singer, who's joined her boyfriend on stage numerous times, didn't disappoint the audience that evening. She made an appearance during Shelton's show, culminating in a romantic embrace captured on the jumbo screens (and adorably shared on Stefani's Instagram as well).

Shelton is currently on his 2018 Country Music Freaks Tour, which includes special performances from Brett Eldredge, Carly Pearce and Trace Adkins. The 14-date tour kicked off Feb. 15 in Tulsa, Okla., and wraps up March 17 in Philadelphia. Shelton will also be playing Rodeo Houston on Mar. 1.

Blake Shelton and Gwen Stefani's Most Adorable Love Songs

A Perfect Match: These Blake + Gwen Pics Are the Sweetest!