Places conordgallagher Wants to Go

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

Even Henry David Thoreau found this glacial pothole irresistible.

An artsy hidden staircase leads to breathtaking views of San Francisco.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

This 15th-century aqueduct with distinctive pointed arches was used for irrigation in the Vinalopó valley.

A well-restored ancient archaeology site gives a real feel for life during the Roman age.

A celebration of solstice followed by a fiery purging of evils.

The boulder on which Alexander Hamilton laid his head after a deadly duel can still be visited on the New Jersey coast.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

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

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

A toxic ghost town sitting atop a massive coal fire.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

The monument marks where Simón Bolívar and his Spanish adversary Pablo Morillo met to have a drink together.

Dr. Farid Mattar's Monument of Peace.

Ruins of the laboratory where a mysterious doctor invented an embalming fluid and stored his mummies.

This former shopping center now acts as the eccentric lair of the Venezuelan secret police and their shadow prison.