The longest straight staircase in the world is located in St. Helena with 699 steps.

I believe everyone has climbed stairs. Generally speaking, there are only about twenty steps on one floor. It is easy to be scared up to the fifth floor. But now that there are elevators, many people are reluctant to take the stairs. Do you know the longest straight staircase in the world? On the island of St. Helena, there is a straight staircase built in 1829. It is very high, with 699 steps. 1. There are 699 straight stairs

St. Helena is a volcanic island in the South Atlantic Ocean. It belongs to Africa and the United Kingdom. This island is where Napoleon was exiled. The location is a bit remote, but the scenery on the island is still very good, and there are some tourist attractions worth visiting. For example, the longest straight staircase in the world is one of the more famous attractions on the island.

This straight staircase is very straight, with 699 steps in one foot, which is equivalent to the height of thirty or forty stories. It is a famous local classic. The straight staircase was built in 1829 to transport goods and has now become an attraction. Many people go to St. Helena to experience the straight stairs. Although there are stair handrails, the height still scares many people.

For those who are brave, such a high and straight staircase is a very good experience. But for people who are afraid of heights, this staircase is very scary. The scenery on the island is still very good. Climbing up the stairs and standing on a high place to watch the scenery will be a great experience. If you have the opportunity to go to St. Helena, you must experience it on the straight stairs. 2. Penrose Staircase

The Penrose Staircase is a geometric paradox. It is a four-cornered staircase that never ends whether it is going up or down. Of course, this is just an imagination, in a three-dimensional space. It is impossible to exist.

The Penrose Staircase also appeared in "Inception". The infinite loop is actually a visual illusion. You can never find the highest or lowest point