New Delhi - For millions of foreign tourists who come to India every year, the blockbuster attractions are still the grand palaces of the mediaeval maharajahs and that delicate marble monument to timeless love, the Taj Mahal.

A few years ago, though, a new trend of theme-based tours sprang up. The Buddhist trail lured visitors looking for nirvana. Rural tourism took travellers to spruced-up villages. Slum tours led them down sewer-lined alleys for a brush with poverty.

Now comes the latest variant: Gandhi tourism.

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