On the highway between Zion National Park and Bryce Canyon National Park, this tunnel includes a series of "windows" in the sandstone walls, allowing drivers to look out over some pretty spectacular vistas.
This tourist attraction transports guests under the Huangpu River in automated cars through a tunnel filled with LED lights, strange audiovisual effects and deep voices speaking foreboding words.
The world's longest completed road tunnel, it passes through 15 miles of mountainous terrain. The engineers who created the tunnel divided it into several sections, each with its own lighting and subtle curvature to keep drivers engaged.
Every year, hundreds of cars pass through a "tunnel" carved from a giant 2,000-year-old Sequoia tree that fell across Crescent Meadow Road in 1937.
This 17-mile-long tunnel sits more than 500 feet beneath the surface of Geneva and serves as the laboratory for scientists studying the field of particle and high energy physics.
This remains the widest single bore tunnel in the world more than 80 years after it was built. The 76-foot-wide tunnel carries five lanes of traffic in each direction.
The Chunnel, as it's often referred to, is the world's longest international tunnel and connects London with France by passing beneath the English Channel.
A 6-mile tunnel combines with a 3-mile-long bridge, but its most interesting feature is the giant rest stop perched on top of it, complete with shops, restaurants and an observation deck .
This is considered one of the world's most beautiful "tree tunnels." Located in the Arashiyama district, this 1,000-foot-long path winds through densely planted bamboo trees.
Siloam Tunnel, also called Hezekiah's Tunnel, was dug beneath the City of David in Jerusalem as early as the eighth century BCE, making it one of the world's oldest known tunnels.