Random triples
| Subject | Object |
|---|---|
| gptkb:Moffat_Tunnel | occasionally open for tours. |
| gptkb:Hoosac_Tunnel | attracts visitors interested in history and engineering. |
| gptkb:The_Gotthard_Base_Tunnel | promoted as a tourist destination |
| gptkb:Albula_Tunnel | popular tourist route |
| gptkb:Channel_Tunnel | popular tourist attraction |