Manhattan Penthouse (Billionaires' Row)
A luxury apartment on the upper floors of a skyscraper in Manhattan's most expensive neighborhood.
Estimated value as of 2026 路 Source: https://serhant.com/blog/nearly-half-of-billionaires-row-remains-unsold
Fun Fact
Some penthouses have never been occupied by their owners and serve purely as investment assets.
Price History
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Tunnel
A typical urban transportation tunnel in the United States costs approximately $1-2 billion per mile to construct, representing the market value for a standard-length segment using modern tunneling methods.