Who says the best things in Denver have to be shiny and new? Riverside Cemetery is the city's oldest functioning cemetery, located between the Platte River, the train tracks and the industrial Northside. But what makes this spot, where many of Denver's founders are buried, so remarkable is the diversity of tombstones. Sure, there are plenty of standard rectangles, and the more recently people were buried, the less interesting their markers seem to be. But go back in history and you'll see remarkable horses, life-sized sculptures of city founders, a decidedly not-religious tree stump, puzzling babies, a tombstone to a Serbian soldier that looks something like a hot-air balloon, and so much more.