Luxury Homes Network - - Features luxury properties in Europe, Asia, and the US. Includes virtual tours plus search for agents, listings, and rentals.
LuxuryHomes.com - - Showcases some of the world's finest real estate and the industry's leading luxury brokers.
LuxuryRealEstate.com - - International directory of high-end homes and estates for sale, associated with "Who's Who in Luxury Real Estate" magazine. Includes search and email postcard capabilities.