Museums showcase the most significant of these inventions and cultural contributions to our world history. Each artifact is researcher and carefully curated to bring the past into the present for museum visitors to view and appreciate, while inspiring the imagination of all who enjoy them. Similarly, this large assortment of wood and metal brainteasers has also been carefully curated. Ranging from easy to difficult brainteasers, this is a genius collection that only the most determined can solve. Perfect for Father's Day, this makes a thoughtful gift for dads who enjoy a challenge, hands-on puzzles, and clever design.