Athens Historical Buildings
If you are visiting somewhere like Athens, Greece one of your priorities would surely be to view some of the city's historical buildings. Using the historical monuments database from EIE (Archaeology of the City of Athens) Phil Stubbings has created this Google Map showing the location of interesting architecture in Athens.
The map includes a slider navigation control that allows you to refine the buildings shown on the map by date range. So, for example, you could choose just to view buildings erected in the city in the 16th century. The map also has a good search function that lets you search for architectural styles, for example 'neoclassical'.
As well as finding the location of historically important buildings in the city you can also overlay an historical map of the city from 1890.
I really like this map. In fact it has just sneaked in at the last minute to claim the crown for 'map of the week'.