The iconic Casino de Monte-Carlo is a prominent tourist destination, accessible year-round for visitors aged 18 and over (ID required). While the stunning atrium and certain public areas can be explored solo and often without charge, entry to the private gaming rooms typically incurs a fee (around €17-€18) and strictly enforces a smart casual to formal dress code (no shorts, sneakers, flip-flops allowed). You can opt for a self-guided visit to admire the architecture, or for those interested, guided tours are available to delve into its rich history, separate from gaming. A typical visit can range from 30 minutes for a quick look to several hours if engaging in gaming or dining. Beyond gambling, it's an architectural masterpiece and a cultural hub, hosting an opera and ballet.