The world’s largest hourglasses shared in a Wikipedia article

The world’s largest hourglasses shared in a Wikipedia article

The world's longest-running hourglasses can take an entire year to empty their sand chambers, and you can learn about them in this Wikipedia article. The Timewheel in Hungary, created in 2004 to mark the country's entry into the European Union, takes 12 months for a complete cycle. — Read the rest The post The world's largest hourglasses shared in a Wikipedia article appeared first on Boing Boing.