(Note: I could find no photographs of the LZ-55 before its downing in WW I)
The LZ-55 was built at Potsdam, Germany in 1915 during World War I and was used as a German bomber. She was produced as "LZ-55", but was given the designation as the "LZ-85" for her military service (LZ-85 was a tactical designation. In WW I, the German Army added '30' to the Zeppelin production number to obscure the number of Airships in production). She was 536 feet long, carried four 240 hp Maybach engines, and had a max speed of 60 mph. Her first flight was on September 12, 1915.
The LZ-55 was transferred to the German Army and she participated in her first mission on October 12, 1915 - a raid against Dunaburg, Latvia. Subsequently she participated in bombing raids on Minsk, the railroads of Riga, and Saloniki (Thessaloniki, Greece). Ultimately, she was shot down by the HMS Agamemnon on May 5, 1916 during her last attack on Saloniki.
The LZ-55 was shot down during a raid on Saloniki (Greece) and crashed into the Vadar river swamps near the mouth of the river.
The crashed components of the LZ-55 were gathered and carried to Saloniki where officials did their best to reassemble the remains in an attempt to gather some intelligence on German military operations. It was, after all, World War I.
When the LZ-55 was shot down on May 5th, 1916, authorities gathered the debris and took it to what is now Thessaloniki, Greece. There they reassembled it as best they could in an attempt to glean as much intelligence as they could about German military operations. In this photo, you can see the girders being reassembled, with large poles erected to hold the assembly:
Photo credits: Public Domain
Very noticeably, the castle-like tower in the background just begs to be identified! Indeed, it is here, in Thessaloniki, Greece:
The map tack above is at Lat 40.626376 N, Lon 22.948328 E,
Zoomed-in the 3D view someone generously created, the scene today looks like this:
Photo credits: Google Earth
If this is the proper view, it puts the LZ-55 wreckage assembly at Lat 40.626363 N, Lon 22.947953 E, on the ocean-side of the tower.
Here is a shot of the White Tower in 2009, taken from a perspective just a bit to the right of the shot of the LZ-55 framework:
Photo credits: Stefan Solakov
While the LZ-55 was reassembled at the White Tower, its crash site was "in the swamps at the mouth of the Vardar river". I found no record of the exact crash location, but the mouth of the Vardar is here:
Photo credits: Google Earth
Here I've placed a red oval at the mouth of the Vardar river. The center is at Lat 40.528377 N, Lon 22.716315 E. View in Google Maps, I assume this is the location of the crash of the LZ-55:
A photo does exist of the LZ-55 crash site, before the remnants were taken to Thessaloniki:
Photo credits: Public domain
I've marked this photo as located at Lat 40.531316 N, Lon 22.724768 E, although this is just a guess as it is at the mouth of the Vardar river.