Conclusion. In Madison, Wis., items include a turn-of-the-century Japanese bamboo sculpture, Edwardian pearl earrings with art deco pendants and an oil painting by 19th-century artist Thomas Hill that's valued at $60,000 to $80,000. Also: a visit to ... (more)Wisconsin's House of the Rock, which was built on and around a chimney rock is filled with antiques and collectibles.