The 105-storey Ryugyong Hotel under construction in the North Korean capital Pyongyang in 2008. It still hasn't opened

The twin Petronas Towers Kuala Lumpur, Malaysia, can be seen mid-construction in 1995. The towers have 88 storeys each, and each stand 1,483 feet above street level

A vintage postcard of 1960s Istalif

The Sagrada Familia, a fixture of the Barcelona skyline and a major tourist site, had its first stone laid in 1882 however picture was taken in 1935, with decades of work left to do.

These are the negatives for the incredible images, with the top right showing Titantic's sister ship, RMS Olympic

The snaps were taken at 12.15pm on May 31, 1911 by a Belfast businessman who was given close access to the doomed liner at the Harland and Wolff shipyard

The picture of the iceberg taken from passing German liner Prinz Adalbert has appeared in books about the disaster but an accompanying note which gives it credibility was virtually unknown until now

On the same day, the Titanic's sister ship, the RMS Olympic, that had been launched in October 1910, set off on her maiden trip to Liverpool

Never-seen-before photographs showing the launch of he ill-fated Titanic from a shipyard in Belfast

Linoenewald was the chief steward on the German liner Prinz Adalbert that passed the disaster scene on the morning of April 15. The Titanic had sunk at 2.20am on the same day.

After the official inquiry into the Titanic, pictured, disaster in which 1,523 people died, both items were framed and hung in the company's boardroom until they went out of business in 2002

A passenger points out Piccadilly Circus on an early Underground map. The modern graphic design of the maps was first drawn up by Harry Beck in 1933

A 'new-look' London Underground station in 1960 with its long escalators

1950s PIDC Building

After the eruption of Mount Tarawera.