The Lair of Splinter and his four turtle sons—Leonardo, Raphael, Donatello and Michelangelo—is located underground, beneath New York City.
This version of the lair is branched off from the Lair in the 2012 TV series. Its history before the events of the Amazing Adventures comics is the same as that of its animated version.
The main room of the subway relay station has been fashioned into the lair's common area. In addition to a common area, there is also a kitchen, a dojo for practicing Ninjutsu, several bedrooms and Donnie's lab. The common area and dojo each have skylights that shine down natural light during the day. The lair is also wired with electricity and plumbed for running water. In the common area, there is a "moat" of water that surrounds the dojo on three sides; this moat connects with New York City's sewers, though the moat itself appears to be clear, relatively clean water.