One of my favorite places to visit in Manhattan has become the High Line. What a great use of space, way to revitalize an area and unique view of the city.
We had Sunday brunch at riverpark. They have lovely outdoor dining on the river and their own 'farm' by the restaurant. I hadn't thought of reusing milk crates for gardening but it seems like a great use!I also came across this article from Whole Living that challenged urban gardeners in Brooklyn to grow in only 8 square feet. It included lots of great ideas and included a garden with a lime tree. I'd thought the climate wasn't right here to grow citrus and been sad about that but maybe there is hope... I'll have to do some more research.
Since we have a large yard (especially for the area we live in) we put in raised garden beds and didn't explore other urban gardening ideas but perhaps we can use them to expand on our growing or on extending our growing season.