Pienza's Clock Tower and Cathedral Bell Tower rise above the clouds and fog that covers the Val d'Orcia below, UNESCO World Heritage Site, Tuscany, Italy, Europe

workers in a Padi field, Sumatra, Indonesia, Southeast Asia

Panoramic view of the Val d'Orcia with fog dispersing to reveal a Tuscan farmhouse perched on a small hill, UNESCO World Heritage Site, Tuscany, Italy, Europe

Early morning mist lingering among the villas and farmhouses within the Val d'Orcia, UNESCO World Heritage Site, Tuscany, Italy, Europe

A huge blanket of dawn mist flows down the valley, leaving only trees and bushes rising above it, New Forest, Hampshire, England, United Kingdom, Europe

View down rainswept Milford Sound, mountains obscured by cloud, Milford Sound, Fiordland National Park, UNESCO World Heritage Site, Southland, South Island, New Zealand, Pacific

Peak of Mount Everest, Sagarmatha National Park, UNESCO World Heritage Site, Himalayas, Nepal, Asia

Peak of Mount Everest peeking through the clouds, Sagarmartha National Park, UNESCO World Heritage Site, Himalayas, Nepal, Asia

Seagull soaring over a boat at anchor on a foggy morning, Gaspe Peninsula, Quebec, Canada

Spruce forest with morning mist and sun rays; Quebec, Canada

A stem from the Golden Gate Bridge shows itself through the trees and fog, San Francisco, California, United States of America