https://www.youtube.com/watch?v=OMhwhdjOnPk
https://m.youtube.com/watch?v=R4qwMOBE_pk
https://youtube.com/watch?v=Eeip7L_G7-0
1916- The Palace Bridge, a bascule bridge, opens in Saint Peterburg, Russia.
https://youtu.be/pABK8Di1Y5Q
https://youtu.be/uWx69OBNKzY
https://youtu.be/0Gl1qmPefbk
https://youtu.be/Bn9_tGftyk0
https://youtu.be/DLi1PWdd4sM
https://youtu.be/F02yQUF4j30