Take a psychedelic trip in a glass capsule along the 647 metre flashing, strobing tunnel.
There is a tunnel connecting the two banks of the Huang Pu River - the Bund Sightseeing Tunnel. It is a great way to get across the Huangpu River if you are on any side of the river and want to go to the other. BTW, beside this, you may take ferry or take the metro to get cross - to take a taxi is not so wise since the taxi has to get back toward west from the Bund, enter the tunnel to the east, and get back to west after going out of the Yan'An Road Tunnel...
Back to the Bund Sightseeing Tunnel. The price is 30 RMB single trip and 40 RMB round trip. It basically is a tunnel with rails in it and small carts like those on the cable cart in mountains run on the rail. The tunnel is not well decorated - or to better put it, it is decorated using the technology 30 years go - just some colorful lights shining on the wall of the tunnel. It is kind of funny to see this if you have high expectation about what a "Sightseeing" tunnel will be. Of cause there is no transparent glasses which you can see the water of the river.
Have a try for the tunnel as a tourist. No local in Shanghai really take it as a way to go across the river.