A couple of years back, The Museum of Modern Art performed a digital restoration on some travelogue footage of New York City that was shot in 1911. They did a great job with it, and the video was widely disseminated—you may have seen it at the time or in the months since.
Now, a Swedish company called Svenska Biografteatern has done even more work on the footage, giving it a higher frame rate and resolution (4K) and a subtle color tinting.
For anyone who loves New York (or dreams of time travel), it makes for a magical eight-minute journey into the past.