The Wormhole in Shanghai

The Wormhole by Stuck in Customs via Flickr and Creative Commons Atribution, Non Commercial, Share Alike Liciense

The Tourist Tunnel is part of Shanghai's subway network which links the old west side with the new east side of the city. Running under the Huangpu River between Pudong and Puxi districts, the Tourist Tunnel is a unique experience. The line uses specially modified trains with bubble windows allowing travelers to see the varied illuminations on the tunnel walls as they pass though.