A Getsemani graffiti tour is basically a 90-minute to two-hour walk through the neighborhood's back alleys and squares with a local guide who explains the artists, the stories behind the murals, and how street art has evolved as the area gentrified. You'll see everything from huge political pieces and colorful portraits to smaller tags and stickers. Expect a mix of history, social commentary, and Instagram stops. The pace is easy but you'll be standing in the sun or rain for most of it. It's genuinely one of the better ways to see a side of Cartagena that isn't just colorful balconies and tourist restaurants.
Best time is December to March when it's drier and slightly cooler, though crowds are higher. Avoid the heavy April-November rainy season if you hate slick sidewalks and sudden downpours interrupting the guide. Expect to pay around $15-35 per person depending on whether it's a small group tour or semi-private. Some operators include a cold drink at the end; others don't.
Tip: choose the afternoon or sunset tour if you want better light for photos and slightly fewer crowds than the morning slot. Skip any tour that promises a "secret" speakeasy or bar crawl at the end unless that's explicitly what you want; the pure graffiti-focused walks are tighter and more interesting. Wear comfortable shoes and bring cash for tips if your guide is good.