There may have been a depression raging in the rest of the U.S., but on Kauai, sugar was king, and sugar plantation owner Gaylord Parke Wilcox was incredibly wealthy. In 1935, Wilcox built a plantation home to show off his prosperity. Designed by British architect Mark Potter, the 16,000-square-foot Tudor-style mansion, costing $200,000 at the time (some $3 million to $5 million in today's dollars) is still recognized as the most prestigious home on the island. You can tour the incredible home today, free. Housed in the structure are Gaylord's Restaurant, which is in the original dining room, and several small shops featuring art galleries and specialty boutiques. The living room still has furniture from Wilcox's period, and the same art on the walls. You can walk the manicured grounds by yourself or take a 20-minute Carriage Ride ($10 adults, $5 children 12 and under). A longer, 1-hour historical Horse-Drawn Sugar Cane Tour is offered in an 18-passenger "candy red" wagon (with padded bench seating) pulled by Clydesdale horses ($24 adults, $12 children 12 and under).