Most were built during the Second Renaissance in response to the O2 Depletion Event
This is to be my model sub going forward here. Please take a little extra time in your comments. I especially want to hear the negatives.
The countryside of the Stolen World is littered with very unusual urban dwellings, here are 7.(fixed typo in summary, lol , bad start)
Large glass domes are popular in pulp science fiction, covering alien cities, protecting the last cities of man from a ruined and scorched earth, and providing sky lights for space stations and habitats.
The Oracle of Ein (pronounced un) is a relic devoted to the sole idol of faith remaining on the world of Kalimon after Elementallion, a major catastrophe.
An overview of the environs and settings of the Cosmic Era on a meta level
The Road to the Hundred Angels
30 places for the most vile villany to take place in. (unfinished.)
A table of possible backgrounds, qualities, or features of a fantasy town or city. A world building tool for getting attention to the details.
A magical place of weapons and armour beyond mortal imagination
Pocket dimentions for Supers and Modern Horror. With some modification many are useable in other genres
These are minor things that can be dropped in anywhere to add "narrative flavor", to make it more than just another road, field, forest or beach.
Defintion: A Holde is any bounded place where the rules of an "other realm" hold sway, but are still of this world.
A Celestial Lense is a metallic clearing that focuses the energy of the etherial to the material realm in remote places. These points of concentrated Good and Order create dangers untold in the regions around them.
A HellPit is a spring of green ectoplasmic goo that spring forth from the bowels of the astreal to the materail realm in out of the way places. These points of concentrated Evil and Chaos create dangers untold in regions around them.
A mysterious quarry. Feel free to suggest explanations - it’s just an eerie thought that struck me that I intend to play with.
With a huge number of sacrificial victims, another realm long ago secretly bound a Prince of the land spirits, Iorstonn by name, thus ensuring the fertility, and improving the magical defences, of their realm. But binding that Prince to one spot has disrupted the weather and magical patterns (ley lines?) over half the continent. Things have become bad enough that a coalition has been formed to rectify the situation, once divinations have established the cause.
Your party is one of the teams assembled to do the rectification: find the binding object and steal it ("so that we can destroy it here in our realm, of course"...*) or destroy it over there. Presumably the Prince will be grateful to his rescuers and angry at the binders, but with a greater spirit like Iorstonn one can never be sure: such beings are "tricksy".
* Of course, the rulers of our realm might want to control Iorstonn for their own ends...