The building with the sphere on top marks the Punta della Dogana, the point of the island that separates the Giudecca Canal and the Grand Canal. Currently an art gallery, at one time the building was a customs office. Venice, being a maritime power, obviously earned a lot of its wealth from taxes on trade and so at one time this would indeed have been a symbol of that wealth and power.

Of course, those days are long gone. Still, symbols of wealth are not hard to find in Venice such as the 52 m, 645 tonne yacht "April" which can be seen in the foreground. Previously known as the "Bel Abri" and "Belle Aimee", she was built in 2010, and refitted in 2013. Capable of holding 10 guests and 5 cabins, she also carries 12 crew. Naturally she has a deck Jacuzzi as well. According to its promotional page, "Boasting a huge master suite, superyacht 'Belle Aimee' offers what feels like endless luxury".

The barge to the left - the one with the colourful bags on deck - is one that we previously saw in image 20160827_016215. It belongs to a company called SipsItalia, which is an industrial laundry firm. At a guess those bags are full of clothes for restaurant, hotel and similar staff.

I doubt that the crew of that barge or any of the people that those clothes are destined for will ever have the opportunity to experience the "endless luxury" of the April. I'm not really making a judgement about that one way or the other since some people do earn their way to luxuries. Others, of course do not but do it on the back of other people. I have no idea who owns the yacht and whether they really earned it. But when it comes to wealth disparities, I imagine that places like Venice are as good a place to find them as any.