At this barrel organ museum, history and live concert keep Dutch street organ culture alive.

One of the great math minds of the 17th century is underfoot in this 900 year old Dutch church.

An impressive array of unique homemade planetariums.

An awe-inspiring giant blue whale jaw bone stands in the center of this Dutch island.

This unique bridge physically lifts a piece of the road into the air to let boats pass by.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

Europe's official "zero-level," the equator of elevation.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.