It seems that the name is Central-Hudson. You can see it clearly
here, on the paddle box and bow plate. Maybe it was the flagship of the line.

The railroad tracks clearly visible in the satellite photo Larc posted got me interested. Apparently the big structure under the sign is both a railroad station and a dock; passengers on boats from New York City or Albany could transfer to the Ulster and Delaware Railroad there, and vice versa. The railroad would take them to hotels in the Catskill Mountains.

Today, the Trolley Museum of New York operates trolley cars along the railroad line, from this location to about a mile south.

The larger structure appears to be a terminal at the end of a long dike that still contains trolley tracks. Back in town just beyond the base of the dike lies the New York Trolley Museum. Hopefully they have a poster of this image on display there.

and same time...just minus the people.

The side-wheeler in the background has the name Central-Hudson on her paddle box. This is the Central-Hudson Steamboat Company of Newburgh, NY. I cannot make out the vessel's name, but she has many interesting features including boilers and short smokestacks placed on sponsons (overhangs) on each side. There's a clerestory over the engine room amidships. Placing the boilers away from the centerline was considered to be a precaution against boiler explosions.

Can anyone make out the name of the ship?

There's a freight train on the far shore. There are still active tracks there today.

In the foreground pond r.l. we find a handsome pulling boat with a wineglass transom, possibly a "Whitehall boat". The boat with the flags seems to be a power launch. Best of all is the canoe-sterned launch at anchor.

Now, somebody please explain the crossed whatever-they-are at the base of the spire on the gazebo !

This Google Earth satellite view shows the same area in September 2013. The island near the center is where the bandstand stood. The 1906 photo is looking generally east, which is at the top of the satellite view.

This is what I think of when I think of the Victorian age. Fancy dresses, suits, hats, and gazebos. They don't make parks like this any more, strictly for their beauty and relaxation. What I wouldn't give to jump in a DeLorean and travel back to this era.

It's a joyous scene. You could take a boat out for a row, have a bite to eat along the wharf, or simply sit by your honey and woo her.

Great picture!