Canada has several notable natural and architectural attractions. SNOLAB, located in an underground mine, is the deepest laboratory in the world dedicated to studying neutrinos and dark matter. The Canadian Parliament Building in Ottawa resembles a medieval castle and its precise architecture inspires respect. Niagara Falls, located along the Canada-US border, is one of the natural wonders of the world with its powerful waterfall. The Royal Ontario Museum in Toronto houses over 6 million artifacts across 40 galleries showcasing collections from around the world.