Shamrock Towers
The Shamrock Towers are a complex of four interconnected skyscrapers carved from a cluster of ever-growing gemstones near the center of the Emerald City. As a result of the emergence, the towers heighten at a rate of three feet per year—and have done since the dawn of the First Age.
Description
The four circular towers are arranged in a clover-like configuration and loom large over the Emerald Garden below. Each tower is a different height, with the north the tallest and the south the shortest. The slanted top façades of the buildings are perhaps their most iconic architectural element.
A man-made entry complex sits at the base of the towers and exterior elevators rise up from that part of the building to service each of the towers above.
Inside each tower, the crystal has been carved out to accommodate luxurious residential living spaces. New floors open for occupancy every four years.
History
At the dawn of time in Eden, the crystals which would become the Shamrock Towers were naught but the largest of the stones to be found in Emerald Garden. The halflings who found them, for reasons lost to history, decided to leave these four unharvested. And so it was that they continued to grow and grow and grow some more.
It was only in 142, following The Invasion of Oz by Oscar Diggs, that talk of developing the towers into dwellings began in earnest. The humans who moved in to take control of the “rowdy” halflings would need places of their own to live—human-sized places—and carving out the towers seemed like a great option.
To them, at least. To the indigenous halflings? Not so much.
There were 36 stories in the north tower on opening day in 145, but there was only one story the folks in the Ostké Liberation Front were telling their members as they watched their occupiers move in that day. “One day,” the OLF said, “those towers will have to come down.”


Oh man, this reminds me of Mount Rushmore and after learning it's history, I'm so sad what we did to it.
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Yeah, same. I've been wondering for a while what I would do with the image of emerald towers that seems to be a big part of most depictions of the Emerald City and this just felt like the right move.