This unusual building straddles two countries.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

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

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

Historic Hull Street was actually the first street with a proper name in the Boston area.

The Vermont square that inspired Shirley Jackson's "The Lottery."

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

Over 50 whirling pools left behind from the glacial age.

A former copper mine which became a truly unsuccessful prison.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

An eccentric inventor's castle home with its own indoor weather system.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This delicate museum is devoted to the art and industry that once supported Cape Cod's oldest town.

The first declared National Monument in the United States.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

Three prestigious academic collections come together to create a world-class natural history museum.

MIT students continue the legacy of beloved professor "Doc" Edgerton through learning by doing.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

An enormous, inside-out glass globe built in 1935.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Just below the surface, shrimp are producing temperatures hotter than the sun.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.