According to the AIA Guide to New York City, this "large, freestanding, elaborately ornamented Italianate house is a remarkable throwback to the area's 19-century roots."
The plaque relates the legendary account of General Woodhull's death, claiming that on August 28, 1776, after having been captured, he "was mortally wounded by a British officer near this spot for refusing to say God save the King".
I've seen several similar paintings in other parts of the city, and I finally figured out what they are: rangoli designs! Rangoli (known regionally by other names, including kolam, alpana/alpona, aripan, and mandana) is an ancient art form, traditionally practiced by women, that originated in the Indian subcontinent. You can see more examples here, and you can watch the "world's largest alpona" — several acres in size — being painted on a major thoroughfare in Dhaka, Bangladesh here.
surround an old water storage tank that was built by the Jamaica Water Supply Company and is now part of the city's unused groundwater supply system.
This Art Deco structure (wider shot here) was built in 1933. Babe Ruth served in the 104th Field Artillery, a unit of the New York National Guard, for a few years in the 1920s (photos here), but that was before the regiment moved to this location. On a related note, you can see Ruth's World War I draft card (from back in his Boston Red Sox days) here.