Most of operative corridors are located in uncrowded places. This does not seem to depend on the easier ability to focus on symbols.
Attempts to open corridors in quiet natural locations such as beaches or forests have never yielded positive results. The same happens for attempts to open them inside houses or other enclosed spaces.
Usually, corridors are found in urban spaces but away from entertainment venues, tourist spots, or places of worship.

When the corridor closes, you find yourself in the same place along with the emotions that the corridor has stirred.
Despite the fleeting nature of time, the experience is fully real.

However, we still don’t know where the corridors truly work.

That’s why it’s important to display symbols in as many locations as possible and share your experiences.
It is indeed possible to access the corridor you have installed yourself.