This is beautiful stuff — a video of high-resolution photographs and a movie shot by Thomas Edison at the turn of the century of bathers at Atlantic City, NJ. The photographs span the decade from 1900-1910 and the Edison film dates to 1901. The video is in full 1080p, so be sure to make sure it’s set for that, and expand it to full screen for best enjoyment.
If you like that, the site from where it comes, Shorpy, is dedicated to posting old photographs taken from the Library of Congress collection, cleaned up and posted in high-res format. I could (and have) spent hours just looking at what they’ve posted there each day.