The Triangular Bastion was part of the 18th-century fortifications of Riga. Its foundations are nowadays visible under a modern office building owned by Euro Live Technologies, a playtech company.
Free admission.
Wikipedia https://en.wikipedia.org/wiki/Triangular_Bastion
Phone +371 67 509 854
Address 11. novembra krastmala 17, LV-1050 Riga, Latvia
Coordinates 56°56'53.117" N 24°6'11.275" E