Nagara is a historic village in the Shimoga district of the state of Karnataka, India. It is 17 kilometres (11 mi) from Hosanagara or 84 kilometres (52 mi) from Shimoga. This was called "Bidanur (Bidanoor)" or "Bidnur (Bidanoor)" earlier during the 16th century, this was the last capital city of Keladi rulers.Nagara was resided by an independence activist by the name of Sripathy Rao Baliga (1914–2003) who continued to work for the welfare of the village in the post independence era
In 1763, Hyder Ali, Sarvadhikari of Mysore captured this fort and called "Hydernagar" or "Hydernagara" after his name "Hyder".
Shivappa Nayaka palace, fort, Devaganga tank, Neelakenteshwara temple and Gudde Venkataramana Swamy temple are worth visiting. The fort is built on a small hill, beside a lake. The fort has a system to circulate water around it for safety.
On the hill, within the fort, there are Darbar Hall (King's Court), remains of a palace, two tanks called Akka Thangi Kola (Tanks of two sisters), and a cannon. Devaganga tank is a cluster of seven tanks for bathing. Nagara in Kannada language literally means city. The place is amidst green thick forests which are giving way to urbanisation and eventually to deforestation.