IMO, and I could be wrong, but the drive from Minn/St Paul, other than the Mall of America in Minneapolis, has nothing of interest until you get to the Badlands, Custer STate Park, Crazy HOrse, Mt Rushmore area. Deadwood SD for a day and night, I found to be of interest.
Sinoatrial node is located at the junction of the superior vena cava with the right atrium.
The atrioventricular (AV) node is a part of the electrical conduction system of the heart that coordinates the top of the heart . It electrically connects the right atrium and right ventricle . The AV node lies at the lower back section of the interatrial septum near the opening of the coronary sinus , which conducts the normal electrical impulse from the atria to the ventricles.