Q: What’s the best abandoned place in New York City you’ve discovered in your travels? (And is it still there?) — Posted by L.W.

A: A few favorites: First, I love the building at 4 East 43rd in the heart of Midtown that is thankfully being saved in the next few years. Fort Totten in Queens, a former Army base, has some amazing properties, including a farm house in sorry shape. Staten Island’s Sea View Hospital also has some impressive ruins that have been dying for decades now. And the state of the old Boyce Thompson Institute in Yonkers is tragic. But my favorite “almost-abandoned” property is Alder Manor in Yonkers — the inside is incredible, with a second-floor indoor pool and a main level that seems to recreate the Clue board game layout.