Arles and Van Gogh
The photos of the paintings are necessary to solve this multi

The urban multi we suggest will allow you to follow Vincent Van Gogh who lived in Arles from February1888 to May 1889.
The painter rejected by the Arlesians when alive was honored by an exhibition in 1989. An exhibition showing 31 paintings, entitled "Van Gogh en Provence”; the modernized tradition"  took place in Van Gogh foundation from May 14th to September 11th 2016. 
Wandering along the city, you’ll discover 8 paintings and 8 steps where you’ll pick up clues which allow you to reach the micro cache. Remember to visit the cache Arles in 13# The Alyscamps, a place painted by Van Gogh and Gauguin who kept him company for 2 months.
 *1- On the way in to the Public Park: N 43° 40.542 E 004° 37.823  
https://img.geocaching.com/cache/large/5c800aa7-da9a-47d8-b130-a11db8555fe0.jpg
In the city center the places to park are not free. The best to do is to go to the car park shown below open every day, even on Saturdays, the day when the weekly market takes place.
Go toward the entrance of the summer garden and go to the fountain, which can’t be seen on the table.
Number of banisters around the staircase:
48, 50 or 52 ?
a1 =
*2- The Garden of Arles hospital: N 43° 40.551 E 004° 37.541
https://img.geocaching.com/cache/large/98e9d993-9f7c-4f73-bdc3-62b841b8390e.jpg 
The Hôtel-Dieu was built in the XVIth and XVIIth century, it worked until 1986 and will become a cultural and university space. Van Gogh first stayed in hospital in December 1888 after the episode of the “cut ear”. On the first floor the number of rounded doors is 9, 7 ou 5 ?
a2 =
*3-The Terrace of the Café at night: N 43° 40.670 E 004° 37.622  
https://img.geocaching.com/cache/large/bae686bb-2d7b-4cb2-820d-b745f34b32aa.jpg 
The forum place where this café is located is certainly the most famous and the most visited place in the city. The café was restored in the 90’s with the colours of the painting. The whole place is dedicated to restaurants and hostels.
At the coordinates rise up your eyes to see the sculpture in the corner of this house. Are the windows lattice windows here? 
oui b1 = 1
non b1 = 5
*4-The Bridge of Trinquetaille: N 43° 40.690 E 004° 37.401 
https://img.geocaching.com/cache/large/5c33ce99-d03e-4f28-915f-8fb4a89be212.jpg 
This bridge as well as the bridge of the lions located up in to the north was destroyed during the war in 1944 by the Americans. It was rebuilt in 1951.
On the table, you’ll notice the grown up plane tree and the stone slab at the base of the staircase Find out what the stone slab has become and write down the number on it.
 c1 =
*5- Starry Night: N 43° 40.941 E 004° 37.809 
https://img.geocaching.com/cache/large/b42e6aec-fa17-45fa-8112-152f902f3203.jpg 
In the daylight it is not interesting but at night when the weather is calm the ambiance is here: light and reflections (the fireworks from the Trinquetaille quays are worth seeing! Nowadays the quays are full of imposing cruise ships double parked on the river Rhône. 
From here we can see 9 hitches and 3 parking signs (restricted or permitted): d1 = 1
From here we can see 8 hitches and 2 parking signs (restricted or permitted): d1 = 3
*6-The Yellow House: N 43° 40.929 E 004° 37.901 
https://img.geocaching.com/cache/large/26baa4b9-cb9b-428b-b0e0-02e6bba26604.jpg 
It’s Van Gogh’s second house in Arles. This house has disappeared today, what is before you is located on the second ground on the painting. 
Not far from the plate that describes the painting there is another plate celebrating the plantation of the trees of this bed; what year were they planted? 
Find out the date, add up the numbers, and start again with the results until there is only one number left:
 e1 =
*7-The Railway Bridge: N 43° 41.000 E 004° 37.974 
https://img.geocaching.com/cache/large/898f162a-5622-4c89-821c-2e5c612487c8.jpg 
Except the wall that sustained it, pointed out with a lantern, it’s totally recognizable. The traffic is very busy today but the pavements were wider in Van Gogh’s times. 
A man is crossing the road on the left of the painting. Stand up at the end of the pavement near the no left- turn sign and look toward the city: can you see the tax post between the two bridges?
Yes e2 = 1 
No e2 = 5

*8-The Old Mill: N 43° 40.638 E 004° 38.178  
https://img.geocaching.com/cache/large/27422374-27eb-4f41-8c9a-7aa493e99a29.jpg 
It was old already in van Gogh’times. It’s a private property now being restored. The level of the street has changed but the mill is still recognizable in its old part. 
When coming from the railway bridge, the number of stair steps to reach the old mill is:
f1 = 21
f1 = 25

The final coordinates are N43°40.abc E004°38.def
with ab = ((a1+a2+b1) : 2) + 1
and c = c1-2
and def = (e1 x f1)+ d1 + e2.
There no pencil in the cache, remember to take yours
Be discreet to log, the place is crowded
Do not publish any photo of the cache or its surroundings, it will be suppressed.
Have a good geocaching and a pleasant walk!