bridges

The Titlis Cliff Walk in Switzerland hangs 3,000 meters above sea level, offers mountainous views and sweaty palms

Coolest bridge ever? Trampoline across the Seine

This rather hazardous prize-winning Paris bridge design is "dedicated to the joyful release from gravity"

As San Francisco's Golden Gate celebrates its 75th year, here's a look at some of the world's greatest bridges

Concrete and steel symbol of Aussie industry gets Google Doodle greeting as well