What place could this be?
It is a swimming pool.
    src        edge_attr  dst
0     0  to the right of    6
1     0  to the right of    4
2     1   to the left of   11
3     1  to the right of    5
4     2   to the left of   18
5     2   to the left of   15
6     3   to the left of   17
7     3  to the right of   15
8     3   to the left of   19
9     3  to the right of   18
10    4   to the left of   12
11    4     jumping over   16
12    4         catching   14
13    4   to the left of    0
14    5   to the left of   11
15    5   to the left of    1
16    6   to the left of    0
17    8               in    9
18    9  to the right of   13
19   11  to the right of    5
20   11  to the right of    1
21   12  to the right of    4
22   12  to the right of   14
23   13   to the left of    9
24   14   to the left of   12
25   15   to the left of   19
26   15  to the right of    2
27   15   to the left of    3
28   15   to the left of   17
29   15  to the right of   18
30   17  to the right of    3
31   17  to the right of   19
32   17  to the right of   15
33   18   to the left of    3
34   18  to the right of    2
35   18   to the left of   15
36   19   to the left of   17
37   19  to the right of   15
38   19  to the right of    3