Although I'm not a huge fan of lilies in flower arrangements (I find the smell overpowering when it's near), I do love the look of a lily. And I love it when they are blooming all along the path in the park. These ones grow to nearly four feet!
I'm still a bit confused by the difference between day lilies and tiger lilies, but after reading ehow's description, I'm pretty confident this is a lily (upright, leaves pointed back, tall, blooms last a week or more. And a tiger lily because of the gorgeous color.
Just a few months until they are seen again! Meanwhile, I need to take some pictures of the current tulip crop in the park...