Most Important Structures in this Category
- entry with pictures
- new entry (30 days)
- updated entry (14 days)
| # | Name | Country | length |
|---|---|---|---|
| 1 | Wienerwaldtunnel | Austria | 13350 m |
| 2 | Kalbach Tunnel | Germany | 1287 m |
| 3 | Bühltunnel | Germany | 525 m |
| 4 | Herrschaftsbucktunnel | Germany | 485 m |
