The people of Tamil Nadu consider providing food to others a service to humanity. Thus the service in the state capital, Chennai, is first-rate. Treat your senses to some of the richest South Indian flavours in traditional dishes like sambar, rasam, fish curry or kootu. And don't forget to have a cup of full-bodied Tamil coffee, enhanced with chicory—no visit is complete without it.

Sprawling tea plantations surround the serene hills of Munnar, which attract adventure travellers hungry for paragliding, treks to Anaimudi (South India's highest peak) and hikes originating at the confluence of three mountain streams. The stone Christ Church, built by the British in 1910, is adorned with renowned works of stained glass, and Eravikulam National Park, about 10 miles away, is home to equally colourful wildlife, including the endangered Nilgiri Tahr (ibex), ruddy mongoose and 120 bird species.

Popularly referred to as Ooty, this gem among southern hill resorts is covered in eucalyptus and pine trees and coffee and tea plantations. On a clear day, it's possible to see as far as the Mysore plateau from Dodabetta Peak, the district's most prominent viewpoint. The Stone House, a landmark 1822 bungalow, and St. Stephen's Church are remnants of the area's first British settlement. Also noteworthy: formal botanical gardens, a children's mini-garden and a contemporary art collection.

Though often used as a gateway to nearby beach resorts, Thiruvananthapuram offers plenty of its own to reward travellers who stay. From South Indian cuisine and a sophisticated art scene to architectural treasures and historic landmarks, there’s so much to experience in Kerala’s capital.

Look for spicy dishes flavoured with tamarind and coconut in Kochi, and don’t be surprised if your dinner is served up on a banana leaf. The region is a major banana-growing area, and traditional Kochi cuisine employs the fruit in many dishes, both sweet and savoury. Coconut water provides a refreshing and sweet contrast to the piquant food.

Often compared to Venice due to its abundance of canals, Alappuzha is the gateway to the backwaters of Kerala. Rent a houseboat for an up-close view of the palm-lined waterways. In August, the snake-boat race is a remarkable festival—each traditional boat has a crew of over 100 local sailors.

The misty hills, lush teakwood and sandalwood forests, and acres of tea and coffee plantations of Kodagu are, in a word, stunning. Also known as Coorg and dubbed "The Scotland of India," Kodagu is a postcard-perfect region of scattered villages and hamlets, which are the epitome of old-world charm. Kodagu is ideal for outdoor activities such as trekking, angling and white-water rafting, and major festivals like Keil Poldu (worship of weapons), Cauvery Shankaramana (return of the river goddess) and the Huttari (harvest) festival are a huge draw.

East meets West in this sun-soaked state, where Indian culture intertwines with Portuguese influences left over from a 500-year occupation. The beaches have long served as a magnet for serene hedonists. To the north, the tourist-centric scene is prevalent, with an international flair that is now skewing more hip than hippie. Travel south for stretches of unspoiled sand and an escape from large resorts. Temples, mosques and wildlife sanctuaries provide diversions from the beach.

Mumbai (formerly known as Bombay), India, is famous for its chaotic streets. For bargains and people-watching, outdoor bazaars top the list of attractions. Popular waterfront destinations are Marine Drive, where visitors go to watch the sun set over the Arabian Sea, and the carnival-like Juhu Beach. More sightseeing options are the Gandhi Museum, in the leader's former home, and the cave temples of Elephanta Island. For tranquillity, Mumbai has many religious sites, lakes and parks.