Ramykan

Here is a page for premodern weapons, broken down into a ton of subcategories, with the weapon’s region of origin. 

Here is a page of medieval weapons.

Here is a page of just about every conceived superpower.

Here is a page for legendary creatures and their regions of origin.

Here are some gemstones.

Here is a bunch of Greek legends, including monsters, gods, nymphs, heroes, and so on. 

Here is a website with a ton of (legally attained, don’t worry) information about the black market.

Here is a website with information about forensic science and cases of death. Discretion advised. 

Here is every religion in the world. 

Here is every language in the world.

Here are methods of torture. Discretion advised.

Here are descriptions of the various methods used for the death penalty. Discretion advised.

Here are poisonous plants.

Here are plants in general.