If you have a fear of heights, please take your medication before watching. We will introduce you to the 20 most dangerous bridge tops in the world that will make your hands and feet tremble.

The U Bein Bridge, stretching 1.2 km across Taungthaman Lake in Myanmar, was built way back in 1850. It used to be known as the longest teakwood bridge in the world, and it’s also considered one of the oldest bridges still kicking around. It was built when the capital of the Ava Kingdom moved to this spot, and it’s named after the mayor who spearheaded its construction. The bridge is held up by 1,086 pillars, some of which have gotten a concrete facelift. Plus, they even used wood salvaged from the old royal palace in the ancient city of Inwa.

For the locals, this bridge is a lifeline, and it became a tourist hotspot practically overnight. It’s a big deal for vendors and souvenir hawkers too, bringing in some serious cash, especially in July and August when Taungthaman Lake swells up and the tourists flock in droves.