If you're looking for somewhere to photograph, try ShotHotspot which pulls together images from Flickr and Panoramio onto a map for you to take a look at them. Searchers choose a location, see all of the images and check out what interests them, based on keywords/icons. It's an interesting tool, and it's global in nature. There's an advanced search feature to limit the type of images returned to subjects such as people, water, buildings and so on.
I was slightly surprised to find a few of mine when I did a search on where I live; they had been pulled from my Flickr page without my knowledge. I'm not entirely sure how I feel about this - I'm happy for people to look at my images, and it does lead people back to my photostream if they click through, but on the other hand, I wasn't asked for permission, and the images themselves were not Creative Commons. They say of themselves on this point: "ShotHotspot is an alternative Flickr and Panoramio viewer, and like many other websites it simply displays photos using their respective APIs. Photos that appear on ShotHotspot are not hosted by ShotHotspot - we're a viewer on to Flickr and Panoramio. As such, ShotHotspot fully complies with the terms of service of both the Flickr and Panoramio API, and does not violate the copyright of any photograph." You can also opt out from having your images included and they will remove them within 24 hours - which is great as long as you know that this service exists! Perhaps I'm being a little picky here, and they make valid points.
So how can you use this? Well it's great if you're a photographer of course - you can look for places that you can visit to take your own images. You can search for photogenic places to go on holiday, look for appropriate images that you then may be able to use having checked with the original photographer. I was looking for something specific to my area; it was a stream but I was uncertain of the spelling of the location, so I used the tool to bring up images within a 2 mile radius, chose water images and I was quickly able to identify a specific stream, which turned out to be the place I was looking for. Of course if you're a photographer yourself you can upload your own images for people to look at as well.
All told I liked this particular tool - it's quick and easy to use, and is very helpful. I'll certainly be using it in the future and will join and pop up some of my own images as well.