Where to buy electronic parts (Transistors, Resistors, LEDs) in Helsinki?

I would like to buy some parts for an electronics project. Specifically, a bread board, some wires, some basic components like resistors, transistors and LEDs in bread board form. I'm looking for a more specialised store that sells a larger variety of these things.

Is there any store in Helsinki where I can physically go and buy this? Do you have a favourite online store that delivers to Finland where you can buy this stuff?