Its unique collection details the history of the state's svelte railroads.

A collection of historic buildings in central Birmingham blend seamlessly into the cityscape but have an interesting story to tell.

This landmark honoring a local beer brand is an iconic part of the Minneapolis skyline.

This eclectic sanctuary is a hodgepodge of various architectural styles, all crammed into one building.

This was once the largest four-sided clock in the world (yes, even bigger than Big Ben).

The largest public library in the United Kingdom was designed to reflect the industrial and artistic history of the city where it stands.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Despite the name, this ancient piece of crystal may not have been a lens at all.

A dedication plaque on this Boston tunnel is a microcosm of a massive, controversy-laden construction project.

Norway's oldest cathedral still in use.

This Roman relic was discovered in Scotland by a mudlarking ferryman.

As the glaciers retreated out of northern Wisconsin, this unique natural wonder was crafted.

The tragic death of 19-year-old Mabel Tainter in 1886 led to the construction of this unique Victorian-era theater in the northern woods of Wisconsin.

A town filled with hot chocolate, dazzling lights, and lots of Christmas cheer.

This steep-walled ravine contains animal-shaped formations made from sandstone.

One of the last remaining movie theatres in the country that features a rear-projection system.

Narrowest house in Boston.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This home is steeped in history from, George Washington to George Corwin, High Sheriff during the Salem Witch Trials.

This red light district plaza memorializes the Fab Four and their historic connection to the area.

A tribute to the successful role of the Keflavik Naval Air Station in the defense of Iceland, United States and NATO Alliance.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

The Guinness Record holder for largest hedge in the world is a verdant Scottish bulwark.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.