This mysterious floating city was reportedly seen by thousands of people in Yueyang, a city with a population of about 1-million people. Wild theories include that it was visible due to a portal being opened to another dimension to a secret government hologram experiment known as Project Blue Beam. “This floating city in the sky was recorded over Yueyang, China a few days ago. That is a city of about 1 million people so I am sure loads of people noticed it,” said UFO researcher Scott C Waring. Click here to view the first image in today’s viral picture gallery. Continue reading for the five most popular viral videos today, including one where five vintage gadgets are put to the test.