Iconic underground building in Shinsaibashi, Osaka, home to dozens of tiny bars and restaurants spread across several floors. Each venue has its own unique vibe—retro, punk, jazzy, or intimate. A hidden but cult spot to explore Osaka’s alternative nightlife.

Entry fee: Free. Drinks ≈ ¥500–1,000 depending on the bar.
Touristy? Somewhat. Popular with locals and adventurous travelers looking for an offbeat, authentic night out.