A hidden oasis in the heart of Minneapolis is also an Important Bird Area.

This seemingly cursed monument is dedicated to one of Canada's great war heroes.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

World's first "penitentiary," meant to be humane, drove men insane.

This morbid scene depicts the Darwinian drama of death on the African savannah.

From this desk Al Hirschfeld drew his influential caricatures of the 20th century's Broadway stars.

Originally built in 1869, this castle is currently part of Felician University's campus.

This lonely gas station has stood at this location since 1917.

These headstones and a few stone foundations are all that remain of a once-booming mining town.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

Where a guard killed nine German prisoners during one of the worst 20th-century POW camp massacres in U.S. history.

This set of three large, volcanic hot springs is a favorite haunt for intrepid divers.

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

A Mars simulation in the southern Utah desert.

A tunnel with windows, so you don't miss out on the impressive views.

The largest island on the great salt lake is home to curious creatures and strange stories.