Don't just go to the movies while on vacation in London -- take in 
the larger-than-life IMAX experience. Perfect for the entire family, 
there are a wide variety of films constantly playing at two separate 
locations in the capital city, both of which offer enormous screens and 
state-of-the-art sound systems.
The
 seven-year-old British Film Institute's London IMAX Cinema is located 
on the South Bank. It's the largest screen in the U.K., the height of 
five double-decker buses, and there are nearly 500 seats with completely
 unobstructed views. In addition to science and nature films, there are 
also 3-D movies complete with special glasses and even feature films on 
specially-made IMAX prints (this summer, for instance, you can see 
"Poseidon" or "Superman Returns." Ticket prices range from £8.50 to 
£12.00 for general admission (discounts apply for children) and bookings
 can be made in advance online. Waterloo Station is nearby, with signs 
clearly marking the appropriate underground walkways that will get you 
to the theater.
The Science Museum in South Kensington, just 
south of Hyde Park, also houses an IMAX theater specializing in nature 
and space exploration films, many of which are in 3D. Admission prices 
here are only £7.50 with discounts for children and seniors, although 
the Museum's "IMAX Club" will get you an unlimited number of admissions 
over the course of the calendar year. If you're staying nearby while on 
vacation or are traveling with children, this might actually be a better
 deal. Details are available at the museum or online, but keep in mind 
that this venue is particularly busy with large children's groups - you 
may want to book as far in advance as possible, especially during the 
regular school year. While there are no feature films playing here, 
there are several exciting motion simulator rides that will keep the 
kids entertained - along with all of the permanent exhibits housed in 
the museum. The IMAX and simulator rides charge an admission fee, the 
Science Museum costs nothing to explore.