Eiffel Tower replicas and derivatives and one in the Isle of Man and sold shares to potential investors, including many prominent Blackpool families. When the corporation got into financial difficultly John Bickerstaffe stopped the scheme from collapsing and ensured the scheme was a success. The Blackpool Tower, though one of the oldest, is not a true replica of the Eiffel Tower and differs from the Paris tower in a number of ways: it is approximately half the height of the Eiffel Tower (158 m compared to 324 m), it is not freestanding and the base contains buildings which house entertainments including the Tower Circus and
Eiffel Tower first level. The layout of both first and second levels was modified, with the space available for visitors on the second level. The original lift in the south pillar was removed 13 years later. On 19 October 1901, Alberto Santos-Dumont, flying his No.6 airship, won a 100,000-franc prize offered by Henri Deutsch de la Meurthe for the first person to make a flight from St. Cloud to the Eiffel Tower and back in less than half an hour. Many innovations took place at the Eiffel Tower in the early 20th century. In 1910, Father Theodor Wulf measured radiant energy at