From the Regent website:

Regent Seven Seas Cruises, voted the world's #1 large-ship cruise line by readers of Condé Nast Traveler, announces 13 new and enhanced pre- and post-cruise land programs for European sailings in 2007.
Available as add-on extensions to voyages throughout Europe, a total of 20 Concierge Collection land adventures provide guests opportunities to discover both highlights and hidden treasures of select ports of call, and are specially designed for individuals or small groups.

The new land adventures are offered in the following places:
London, Istanbul, Seville, Turin, rome, Barcelona, Stockholm, Venice, Cairo, Paris, and "key European capitals."

Details are in the complete article, found HERE.