I've reused the LGL (Large Graph Layout) algorithm used by The Opte Project [1,2] with more recent and comprehensive (multipath) traceroutes in 2022 [3].

I've also played a bit with an interactive visualization of the graph by using map tiles [4].

[1] https://github.com/TheOpteProject/LGL

[2] https://github.com/maxmouchet/minilgl (cleaned-up version of the code)

[3] https://www.maxmouchet.com/internet-viz/

[4] https://github.com/maxmouchet/internet-visualization