The site of Paul Revere's historic two lantern warning.

The colonial home of Paul Revere during the American Revolution.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Downtown Minneapolis mixed art and function by turning some of their sewer covers into works of art.

When flour explodes, it's not a pretty sight.

A mapping error in the 19th century made loggers think this section of the forest was underwater.

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

This unassuimng grain elevator, commonly confused for a smokestack, helped inspire the modern architecture movement.

This small, but beautiful waterfall has attracted visits from artists, composers, and two United States presidents.

Opened in 1956, the first modern indoor shopping mall in the world was inspired by the shopping arcades found in European cities.

The fungus-shaped vintage gas station has served multiple purposes over its lifetime, and now serves ice cream.

17,400 lbs., 12 feet in diameter, and 29 years in the making.

This lone survivor of a regional franchise still slings delicious burgers and colossal servings of fries.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

The watery grave of an impractical idea.

Journey through the largest remaining peat bogs in the contiguous United States to see the wilderness as it once was.

Summer in the "Turtle Racing Capital of the World" means rousing weekly reptile races.

.

These cliff and rock formations are made out of Sioux Quartzite.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.