3. Carmelite Monastery, Brooklyn

The walls of this Carmelite Monastery between Highland Park and the Evergreens Cemetery in Brooklyn are not only high, they’re also lined up top with shards of broken glass. This particular monastery is home of the Discalced Carmelite Sisters, who wear no shoes or sandals. According to Forgotten New York, this campus was originally built as a Lithuanian community center in 1974 and the Carmelites moved here after 1997 when their previous location in Crown Heights closed. The mansions you see in the aerial photo were part of Lithuanian community, built before 1974.