This linked site is a 360 degree photographic view of the part of the construction of the Gotthard Base Tunnel under the Alps. An interesting view of part of this massive railroad tunnel project:
http://www.siemens.com/innovation/pool/features/siemens360/siemensGotthardTunnel_en/
This following linked site is a history, and its current state:
“The Project” [The Gotthard and Ceneri Base Tunnels]. Is an interesting read.