Hampi is a UNESCO heritage site. It was the capital of Vijayanagara Empire of 1500s. Krishna Devarayar is the most noted king of Vijayanagara empire.
Hampi is today full of ruins and when you walk you can connect yourself to the history. Among many places, most noted are Virupaksha temple, Main palace, Queen’s palace, elephant staples, Ukkara Narasimha statue, Stone chariot at Vittala temple, Hazara Rama temple and Tungabadra river.
Hospet is the nearest town (12 KMs from Hampi) and has few star rated hotels such as Royal Orchid. Hospet is around 320 KMs from Bangalore and by car it takes 5 hours. There are a couple of trainings connecting Hospet from Bangalore and Hubli. Book these trains well in advance.
How many days needed to cover Hampi is based on your interest level. It can be covered in one day, if you are just interested to see the places quickly and keep moving. On the other hand, if you want to minute details of each place and its history you need to plan for at least 2 days and hire a guide.
You can rent bicycles or autos to roam about. If your group does not mind walking for some 8 – 10 kimometers, that is the best choice to connect with the place.