Geolocate-me.com allows you to find out where your browser and your IP address are geolocated.
It then uses these coordinates to show your position on a map and give you all the usefull places around you (e.g. banks, supermarkets, hospitals, restaurants, parkings, ...).
HTML 5 Geolocation
If you have any questions about Geolocation or about this website, please refer to the FAQ.
If you want to store your travel itinerary, you can use TravelMap.
It is a free blogging platform dedicated to travellers that allows you to create your own interactive Travel Map using Geolocation and different transport modes.
Here is an example of how it looks like :