Admissions fees to some of London's top attractions have gone up to 175 percent in less then a decade, causing concern about soaring costs for tourists.

Wax museum Madame Tussaud's is the most expensive draw at 23.99 pounds per person, an increase of 15.24 pounds or 174 percent, from the 8.75 pound admission fee in 1996.

Nearby Richmond's Royal Botanic Gardens at Kew has increased admissions fees at a similarly sharp 122 percent to 10 pounds.

Inflation has raised average prices by only 25 percent in the same period.

Rough Guide to London author Rob Humphreys tells the Evening Standard Wednesday that attractions are being greedy and will deter tourists.

"You go to any other capital city in Europe and you won't find a place that charges that kind of money," he says.

Other hefty price increases have hit the Tower of London, which raised its admission 75 percent to 14.50 pounds, the London Zoo, up 87 percent to 14 pounds, Buckingham Palace, up 59 percent to 13.50 pounds, and the space-age Ferris wheel London Eye, up 67 percent since its opening in 2000 to 12.50 pounds.