answers

. How often per year does the Tower Bridge lift nowadays to let ships through?

The bascules are raised around 1000 times a year.

http://en.wikipedia.org/wiki/Tower_Bridge#Traffic
Found under conents "Traffic"

2. What did Madame Tussaud start in 1835?



She build the Madame Tussaud Museum.

http://en.wikipedia.org/wiki/Tower_Bridge#Traffic