It once held the title of the world’s tallest building... a little more than half a century later…It was just a memory in the New York City skyline. Today, two minute architecture Time Machine winds back the clock to explore the rise and fall of The Singer Tower. (also know as the Singer Building)

Railfanners like the ambition of the IND Second System. After all, many projects, like the Second Ave subway, Utica Ave subway, Queenslink, SE Queens Line, and Flushing Line extensions are needed in the NYC Subway. However, the IND was also a roads program, and in this video, we will examine how the IND built more roads.

Today AD returns to New York City for a deep-dive walking tour of Wall Street in Downtown Manhattan with architect Nicholas Potts. From the origins of the New York Stock Exchange and its majestic columns to the many architectural styles on display within just a few city blocks, come along as Nick breaks down everything worth seeing when visiting Wall Street and New York's financial district.