Guided Tunnel Boat Trips

Lasting about 50 minutes, your guide will explain the history of London's longest canal tunnel as you cruise through it, passing deep beneath the streets of Islington in the darkness of the three-quarters-of-a-mile long tunnel. Opened in 1820 and in use ever since. You are very strongly advised to book online in advance. Trips begin at 11:00am, 12:00 noon, 14:00pm, 15:00pm, and 16:00pm.

Source: http://www.culture24.org.uk/se000031?id=EVENT411417