It's a must when visiting London: getting in is fo...

It's a must when visiting London: getting in is for free, for everyone. Some exhibitions (temporary ones) ask for a fee that varies depending on the artist and nature of the exhibition, but they're never too expensive.

It's worth checking the web site before coming to know how much will you be spending and how long will you need to see everything you want to see. I'd subscribe to the mailing list if you're very much into art.

You can buy tickets online but it's very easy to buy in person too - I'd say online saves you a queue so it's probably worth doing.