Bridges are an essential part of modern transportation infrastructure, and they come in all shapes and sizes. Some bridges, however, stand out for their unusual and often bizarre designs.

Here are five of the most bizarrely shaped bridges in the world.

1. Octavio Frias de Oliveira Bridge, Brazil

The Octavio Frias de Oliveira Bridge in Sao Paulo, Brazil, is one of the most distinctive bridges in the world. Completed in 2008, this cable-stayed bridge features two tall, sloping towers that lean inward and support the roadway deck with dozens of cables.

The design was inspired by the harp, a stringed musical instrument, and the bridge has become a symbol of Sao Paulo's modernity and progress.

2. Rolling Bridge, England

The Rolling Bridge in London, England, is a pedestrian bridge that has become a tourist attraction due to its unique design.

The bridge is made up of eight triangular sections that fold up like an accordion, allowing boats to pass through the canal. When the bridge is in the closed position, it looks like a normal pedestrian bridge. But when it's time for boats to pass, the bridge folds up in a slow, mesmerizing motion that is truly unique.

3. Henderson Waves, Singapore

The Henderson Waves Bridge in Singapore is not only a functional pedestrian bridge, but it's also a work of art. The bridge's undulating shape was designed to mimic the waves of the ocean, and the deck is made up of a series of wooden slats that create a beautiful pattern. At night, the bridge is illuminated with a series of LED lights that make it even more stunning.

4. Banpo Bridge, South Korea

The Banpo Bridge in Seoul, South Korea, is a cable-stayed bridge that spans the Han River. What makes this bridge unique is the fact that it features a fountain system that sprays water from the bridge into the river below. The fountain is controlled by a computer system that can create different patterns and colors, making the bridge a popular attraction for tourists.

5. Moses Bridge, Netherlands

The Moses Bridge in the Netherlands is one of the most unusual bridges in the world. Instead of spanning over a body of water, this bridge is built into a moat surrounding a 17th-century fortress. The bridge is made up of two concrete walls that create a trench, and visitors walk through the trench to cross the moat. From a distance, the bridge appears to be a magical, floating pathway across the water.

Bridges can be more than just a means of transportation. They can be works of art that inspire awe and wonder in those who see them. The five bridges mentioned above are just a few examples of the bizarre and unique designs that can be found all around the world.

Whether it's a cable-stayed bridge with sloping towers, a pedestrian bridge that rolls up like an accordion, or a bridge built into a moat, these bridges are sure to leave a lasting impression on all who cross them.