
Sailors' Snug Harbor is established as "a haven for aged, decrepit and worn out sailors," and houses around 900 residents by the beginning of the 20th century. The complex was converted into a cultural center in the 1970s, and now, it's one of the borough's most popular tourist attractions.
After an accident in 1901, the city's Department of Docks and Ferries decided to assume control of Staten Island's ferry system—and in 1905, it came under the jurisdiction of city government. Five new ferries, named for each of the boroughs, were commissioned.
Both the Goethals Bridge and the Outerbridge Crossing—named for the first Port Authority chairman, Eugenius H. Outerbridge—open, connecting Elizabeth and Perth Amboy, New Jersey, respectively, to Staten Island.
When the city opened Freshkills Landfill, it was intended to be temporary; but in less than a decade, it has become the largest landfill in the world. After decades of absorbing the city's waste, a plan to turn the former dump into a bucolic park was established, and it received its last shipment of trash in 2001. (It was temporarily reopened following 9/11, but hasn't been used as a dump since those recovery efforts ended.)
The final major project of controversial city planner Robert Moses, this enormous bridge—designed by Othmar Ammann—connected Staten Island to the other four boroughs via roadways. It became the longest suspension bridge in the world, knocking San Francisco's Golden Gate from its perch. In 2014, the bridge celebrated its 50th anniversary.
Staten Islanders give their overwhelming support to a referendum, initiated by State Senator John J. Marchi (among other lawmakers), to have the borough secede from the city of New York. It passes by a two-to-one margin, but ultimately dies in the Democrat-controlled New York State Assembly, whose approval was needed for secession measures to be put in place. Staten Island lawmakers have regularly proposed secession from the rest of the city in the years since—most recently after the Brexit vote in the United Kingdom—though little has come of those calls.
Then-mayor Rudy Giluiani delivers on a promise made to Staten Islanders during his 1993 campaign by making the Staten Island Ferry free for all.
Though much of the city bore the brunt of Hurricane Sandy, Staten Island—particularly its waterfront communities—get some of the worst damage. In the years since, some neighborhoods have opted for "managed retreat" as a recovery method, returning coastal areas to nature. Other communities are waiting to rebuild, though the city's Build it Back program has not been without its challenges.