You don't need a weathervane to tell which way the wind blows.

Allowing vines to grow on your house isn't good. The vines grab onto the mortar causing it to need tuck-pointing sooner. The vines are also a natural path for insects to get into the house.

In addition to the distribution ring off to the right of the conservatory, I see on the rooftop to the left, a swingset looking A-frame structure with insulators to hold the wires.

[Very good. Now explain to us the sideways weather vane. - Dave]

A windy day?

The John Judson Bagley Home was demolished to make way for the construction of the Statler Hotel 101 years ago (July 2, 1913). "Former Gov. John Judson Bagley acquired the site in 1863 and built his home, which remained in the family until it was sold to Arthur H. Fleming in 1907. It was Fleming who sold the property to Ellsworth M. Statler’s chain of hotels."

The Statler, which opened Feb. 6, 1915, "had private baths (a first for a Detroit hotel), in-room telephones and cold running water in every room. It also was the first hotel in the nation with air-conditioning in all public areas. Such features were nearly unheard of at the time it was built. The Statler also had a complete medical department on the top floor."

The Statler became a Hilton property in 1954 (as did all Statler properties that year). Hilton ceased operation of the hotel in 1974 and it was then ran (for about a year) as the Detroit Heritage Hotel. Abandoned in 1975, the structure rotted away (very sadly, like much of Detroit) for 30 years, finally being demolished in 2005. The site remains an empty lot, but with a current investor proposal (Jan, 2014) to build a "Boutique Hotel Development" on the property it may finally be utilized again.

Quoted text credit to:
HistoricDetroit.org

But at least there is this!

Catalogue of the Michigan Conservatory of Music, Detroit, school year 1907-1908.