Top photos from 68 spots for Tunnel

Jubelpark, Brussels

King's Cross/St Pancras Connecting Tunnel, London

Cypress Tree Tunnel, Point Reyes National Seashore

Leake Street Graffiti Tunnel, London

Tunnel Of Love, Obreja

The Initiation Well - Quinta da Regaleira

Copenhagen Subway

King's Cross/St Pancras Connecting Tunnel, London

Trankgasse, Cologne

Jubelpark, Brussels

Jubelpark, Brussels

Cypress Tree Tunnel, Point Reyes National Seashore