The Tower Subway
The second oldest tunnel running under the Thames, running between Tower Hill on the north side of the river, through to Vine Lane on the south side of the river (just to the west of Tower Bridge). It was built in 1868 and pioneered the use of cast iron to line the tunnel, never having been used previously. It was used as a foot tunnel until the coming of the toll-free Tower Bridge. Nowadays the Tower Subway is used to carry telecommunications cables and is not open to the public.
© Mary Evans / Peter & Dawn Cope Collection Mary Evans / Peter & Dawn Cope Collection
General view of Auckland, North Island, New Zealand
A general view of the central business district of Auckland, North Island, New Zealand, with a boat travelling across the harbour. The Sky Tower on the right, used for observation and telecommunications, is 328 metres tall, making it the tallest freestanding structure in the Southern Hemisphere, and the 13th tallest member of the World Federation of Great Towers. It has become an iconic structure in Auckland's skyline.
© Mary Evans Picture Library/HUBERTUS KANUS