Reminds me of this one I took from my flat window in St Leonards a few years ago. Storm Sentinel

Here's 42 in chess lettering

Recalled some old work I like: three 44 cell birotary tours with only four acute angles, and and two 48 cell rotary tours without acute angles. To count as tours the boards must be 'connected'.

First signs of spring. First trolley in the Valley Park Brook.

On a smaller scale: Queens Park Crewe

This Celtic Cross tour includes five small crosses (size 1) and one large cross (size 7) formed by knight moves.

Circular Knight Tour. The 24 black dots mark points whose coordinates from the centre are the Pythagorean pairs
(10,15), (6, 17), (1, 18) whose squares add to 325. So radius is root 325 = ~18.028.

My solution of the Onitiu problem for a board 24 by 24.
The knight tour has 180 degree rotary symmetry. The square numbers 1, 4, 9, 16, etc are on the red line and their complements on the blue line.

Here's a photo I took at St Pancras in 2009.

76 move knight tours on 10x10 board minus 4 triangles of 6 at corners or internal. My youngest brother was 76 yesterday.