Stepping into The Viaduct feels like unlocking the door to The Secret Garden—if that garden was a tiny park and entertainment venue hidden under Downtown’s Buena Vista Bridge beside the LA River with the MTA line zooming like a silver bullet overhead. If you’ve ever wondered what it would feel like if Downtown LA itself invited you to it’s “closest friends only” living room party, this is it. Located deep in the far end of Los Angeles State Historic Park with the sweeping cityscape twinkling in the background, it really doesn’t get much cooler than this. Kensington, the folks behind the Angeleno Heights free porch concert series, has teamed up with the California State Parks Department to bring completely unique one-of-a-kind nights to this intimate space. We checked out their summer concert event, featuring local Americana roots faves The Dustbowl Revival and openers The Eagle Rock Gospel Singers. Dustbowl had the crowd on its feet all night–stomping, jumping and dancing along in a full-blown LA hootenanny. We chowed down on BBQ ribs from Earlez Grille …