(Sightseers’ Delight) — Castle Clinton looks comfortably landlocked at the southern tip of Manhattan today, but do not let the lush lawns and tourist swarms fool you: New Yorkers have been shoving dirt into the harbor to make the island bigger for over two centuries.
When workers finished the circular sandstone fort back in 1811, it sat on a tiny artificial island in the Upper New York Bay, accessible only by a wooden causeway. Since then, the city has swallowed the fort whole using endless landfill, turning the former military outpost into Castle Garden — an entertainment hall that welcomed 8 million immigrants decades before Ellis Island opened — and later, the city’s aquarium.
Now, the shoreline is changing yet again. But this time, instead of pushing the island’s edge outward, City Hall is hauling it upward.
In June 2026, New York completed the first phase of its massive $200 million Battery Coastal Resilience project, raising the waterfront promenade by roughly five feet to combat rising sea levels and violent storm surges. The city wisely ferried construction materials in on barges to spare Lower Manhattan from more than 2,000 truck trips, rebuilding the esplanade with permeable paving, salt-tolerant trees, and salvaged granite.
The overhaul is part of a broader defensive push around Lower Manhattan triggered by Superstorm Sandy, which dumped nearly 10 feet of salty ocean water into The Battery back in 2012. Phase two, which covers the remaining wharf and the Gardens of Remembrance, is slated to wrap up in 2027. Luckily for tourists, the ferry line to the Statue of Liberty is operating right through the jackhammers.
Stroll past Castle Clinton toward the harbor today, and the seamlessly raised park looks entirely natural. It isn’t, of course. It is just the latest chapter in Gotham’s endless war against nature, proving that when the ocean threatens to swallow New York, New Yorkers simply build a bigger curb.
“By rebuilding and elevating this historic waterfront, we are strengthening critical infrastructure, improving public access to the shoreline and ensuring that The Battery can continue serving New Yorkers and visitors well into the future,” NYC Parks Commissioner Tricia Shimamura said in a June release.
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