Changed my idea.

Decided to go with the bank exterior idea. The level will consist of modular buildings that surround the main playable area. In the centre of the level will be a plaza with seating areas and vegetated with plants, flower beds and small trees. The main focal point will be a fountain. This will sit outside the bank. The bank will have a massive stone stair case that leads up to the main entrance. I will be having huge pillars that sit at the front of the bank. Been thinking of architecture that and cities that I could base the level off. Looking at pictures of the internet I've been looking a places like Barcelona, Paris and London. London would be the best bet as it would be easy to get to for reference and textures. The scene will be set after or during a bank robbery. This will be help prevent players form walking around a large city environment as police blockades will be put across the streets to make boundaries of the level.