We use 'at' for a position at a point. So for example, if there was a train line that ran to Victoria and passed Victoria to other places, you would say to your friend 'Get off the train at Victoria'.

Also, if we're using the name of a building we tend to use 'at'. So we're doing this recording at Bush House in London - 'at'. We also use 'at' where people work or study when the name of the place is given. So I can say 'I have a cousin who works at the Pentagon,' or 'my daughter is studying at the Institute of Education' - 'at'. We also use 'at' for group activities. So you could say 'I was at a concert, a party, a football match.'

The idea we have with 'in' is of a position inside an area or inside a three-dimensional space. So you would say 'in the kitchen, in the woods,' or indeed, 'in Malta'. So you can say 'I live in Victoria' or 'I live in Malta'. I hope that's a help.