The town is bounded by two rivers - " River Cauvery" on the north and "River Arasalar" on the south. Kumbakonam gets its name from the deity Lord Aadhi Kumbeshwarar. A traditional representation of South Indian Culture, the town is known for its temples, intricately carved panchaloha idols, exquisite brass wares especially lamps and silks(kancheepuram and kumbakonam are the very well known silk producers). The place, like many other sacred places, has a unique festival known as the Mahamaham festival. The festival is celebrated once in twelve years and coincides with the entry of Sun and Jupiter into the constellation of Aquarius and Leo respectively. People from all walks of life have a dip in the Mahamaham tank along with the presiding deities of the town.
Kumbakonam is full of temples. Every street, road, locality has a prominent temple. Better read some literature on them before your visit them. The Sankara Matam and associated institutions preserve and represent all that is great about the Hindu ancient scholarly tradition.
Some of India's world renowned scholars and intellectuals hail from Kumbakonam including the genius mathematician Srinivasa Ramanujam. The Town High School and the Kumbakonam Arts College are the grand old centres of education with the latter built on the banks of River Cauvery (kaveri) sometimes referred to as the Cambridge of South India.
It has an excellent road link to all the navagraha temples (gods representing nine planets).
The town which was orginally a religious town become an industrial center during the last quarter of the 19th Century and early period of 20th century. Predominance was gained for silk Industries and metal manufacturing.
The major supplier of silk sarees to the Indian market is the Kumbakonam silk industry.
All the South Indian Brass Pooja articles and utensils are manufactured in Kumbakonam and these articles are manufactured nowhere in South India other than Kumbakonam. KuthuVilakku and Statues are the famous articles. Stainless Steel utensils are manufactured.
Betelnuts, Suparis are manufactured in Kumbakonam.
Brass ornamental Lamps (Kuthuvilakku) are also manufactured in Naachiyar Kovil. It is near by Kmbakonam just 8 Km towards Tiruvarur.
To Know about kumbakonam history http://heritagetown.org
The nearest airport is Trichy Airport. Kumbakonam can be reached from the Airport by road in about 2.5 hours.
From Chennai 5-6 hrs of travel by bus.There are excellent bus services provided by both government and private travel services. For more comfortable travel its better to choose a private travel service.From Trichy it's about 90 Kms and about 40 kms from Thanjavur.
The Chozhan,Uzhavan and Chendhur Express trains connect Kumbakonam and Chennai, a JanShatabthi express connects the town with Coimbatore, while the Mailaduthurai-Mysore Express connects the town with Bangalore and Mysore. There are various passenger trains to Thirunelveli and to other towns nearby.
Janashatabthi express reaches by 13:30 and leaves to Coimbatore by 15:15
The train from Bangalore starts at 19:15 from Bangalore and reaches Kumbakonam in the early morning at 05:30.
Auto's from the Kumbakonam Station charge a minimum of Rs.40/- even for the nearest Hotel. If you can move out of the Station and catch a 'running' auto and talk as if you have visited the city a zillion times you can get a better deal.
Being a popular Temple town, Indian railways have introduced couple of more trains to accommodate the peak traffic seasons and to connect Kumbakonam with Chennai, Bangalore and Coimbatore. Please login to Indian Railway Catering and Tourism Corporation to get your tickets booked and confirmed while planning your trip to Kumbakonam. If you are a senior citizen and wish to avail the travel fare concession granted by Indian railways ensure that you carry your aadhaar identity card issued by the government (it seems this will become mandatory after April 2017).
Auto Rickshaw: The cheapest mode of hired transport. Autos ply to small towns in and around Kumbakonam (less than 10 km). As with any other town in Tamil Nadu, negotiate the price before making the trip.
You can negotiate an Auto for half-day or full day rates for the nearby places and temples within Kumbakonam. Charges range from 500/- to 750/- approximately for half-day, depending on the places you need to visit. For a 1.5 days I paid ~Rs.900/- in total.
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Taxis: There are two prominent taxi stands in the town. One near the bus stand and the other near town hall. As with any tourist place, the prices are hiked up once they know you are from out of town.For the Navagraha trip, one can base the trip from Kumbakonam.It taken 1.5 days to cover the 9 temples.Taxis charges approximately 10 Rs per Km.For covering 250 Kms , I paid Rs 2500/- including driver charges
Its a good idea to check with locals on the average fare for autos and taxis.
Bus: State and private operated buses ply to all towns in the vicinity.
There are several prominent temples in the town:
Here is the link to temple route map for the travellers visiting Navagraha temples in Tamilnadu. 
Navagraha temples timings and distance from kumbakonam 
The Mullaivananathan Temple at Thirukarukkavur is quite famous for the goddess Garbharakshambika who is the God's consort there.
There are lots of budget restaurants in Kumbakonam. Although food in general will be tastier all around the city, it might not be hygenic. Check out the hotels around as some also have good restaurants. Hotel Raayas is better for Non Vegeterian and if you are after some quality Parottas and tasty Non-Veg, Hotel Shanmuga seems to be the place as it is the local's Favourite. Hotel Meenatchi Bhavan, Archanas and Venkatramana are all good for a veggie meal.
Sterling Resorts provide excellent food for the rich. But if a simple home style food of the local cuisine is what you want, try out one of the 'mess'.
Coffee. You'll be missing the essence of the trip if you didn't taste the coffee here. Kumbakonam filter coffee is one of the best in India.
There are quite few good hotels that one can stay in. It is better make an advanced reservation to save time from running around to find a good place, especially when you have the family with you.