New Yorkers are lucky that the exuberantly domed 1880 Weir Greenhouse in Brooklyn, the last known commercial Victorian conservatory in the city, is still around to marvel at.

The little greenhouse, on the west side of Fifth Avenue at 25th Street, looks like a retro spaceship of copper and glass that has just touched down from Victorian Gotham. If you like time travel, this is the place for you. The structure stands across the avenue from the double-arched entry gate of Green-Wood Cemetery, a transporting 1865 Gothic Revival confection of elaborately carved brownstone.