The Shanghai Sightseeing Tunnel is a three minute ride under the river to cross to Pudong. Only 30 years ago, the area of Pudong was rice-fields, today it's skyscraper central. If you've seen any pictures of Shanghai, they were probably taken in that area.
The tunnel is different though. It is a bit like light shows of the holiday season, but instead of lit snowflakes and x-mas trees, there are tubes of lights strewn across the tunnel.
I guess I would say that it is the combination of a holiday light show and a car wash. It might not be as epic as you hoped, yet the pictures can be really cool.