Top 10 Tourism Places in Tamilnadu ;

1) Ooty 
  Established in the early 19th century by the British as the summer headquarters of the Chennai government, Ooty is now a soothing place to escape the summer heat. If you travel there during the peak season in April and May, do be prepared for it to be crowded though!
Ooty's most popular attractions include the 22 hectare Government Botanical Gardens (a flower show is held there every May as part of the Summer Festival), boating on Ooty Lake, and climbing Dodabetta Peak for an excellent view of the Nilgiri hills. To get to Ooty, take the scenic toy train from Metupalaiyam.

2)  Kanyakumari
Kanyakumari is located on the furthermost tip of India, where the Bay of Bengal merges with the Arabian Sea and Indian Ocean. The distinguishing feature of this spiritual town is the Swami Vivekananda Memorial and towering statue of Tamil poet Thiruvalluvar, located on a rocky island off the shore. The Swami meditated there in 1892, before setting out on his religious crusade. Kanyakumari is also home to a striking Gandhi Memorial, with architecture resembling that of an Orissan temple.
If you visit Kanyakumari on the full moon night in April, you'll be treated to the the magical sight of the sun setting and moon rising simultaneously over the ocean.

3) Kodaikanal, 
The princess of Hill Stations, located in the Western Ghats, is one of the main tourist attractions of this land.

4) Tirunelveli,

 one of the most visited destinations of this state, with many famous temples and podhigai hills, dam's, waterfalls like Courtallam, Karayar, Papanasam, Manimutharu, Seraru, kothayaru, Manjolai estates , Thenmala eco tourism.


 5)Chennai

 The capital of Tamil Nadu, is known as the gateway to south India. It's a sprawling and busy, yet conservative, city with deep traditions and culture that are yet to give way to the growing foreign influence there. The city's main attractions are its beach, temples, museums and galleries, old Portuguese style churches, and amusement parks.
Around one hour south of Chennai, you'll find the best beach on the east coast -- Mahabalipuram (also known as Mamallapuram). The beach has a thriving backpacker scene, but is also popular with tourists who come to relax at the resorts there.

6) Madurai, 
The second largest city in Tamil Nadu, known as the Athens of the East. Madurai is an ancient city, more than 2,500 years old, built in 6th century, with the world famous Meenakshi temple and other attractions.

7) Yercaud 

This quiet little hill station on the Shevaroy hills of the Eastern ghats is the only one of its kind in northern Tamil Nadu. While the rest of this region is generally dry, including the predominantly short and rocky hills of the Eastern ghats, Yercaud presents a welcome contrast with its cool climate

 8) Kancheepuram,

The city of thousand temples, is famous for weaving silk saris in dazzling colors.

9) Thanjavur,

An enchanting district of Tamil Nadu, is known as the Rice Bowl of Tamil Nadu, and is also home for one of the best temples (Brahadeeshwarar Temple) of South India, built by the great Chola emperor Raja Raja Chola. It is also home for the famous Thirumala Nayak palace.10)RameshwaramOne of the most renowned pilgrimage destination in Tamil Nadu,

10) Rameshwaram 
Ramehwaramis a beautiful city dotted with several majestic temples. Rameswaram tamil nadu is located extreme south-eastern corner of the Indian peninsula. It is the foremost religious city for both Vaishnavaites and Shaivites pilgrims. Apart from pilgrimage, Rameshwaram island also fascinates the picnickers and adventure freaks across the globe.