Places Kevin OKeeffe Wants to Go

This cave system allegedly holds the "metallic library" of a lost ancient civilization.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world’s largest coastal brick fortresses.

A painfully obvious spy house sits right across the street from the Russian Embassy.

Spiral alpine structure provides an alternative experience of viewing the Matterhorn.

A symbol of friendship between the mountainous regions of Switzerland and Bhutan.

One of the only places where Earth’s mantle lies above water.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A hands-on traveling collection of the innovative devices of yesteryear.

Elevated freight railway turned wildly successful urban park.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Tucked in the back of this amazing antique store is an important piece of medical history.

A crumbling hospital from the 1850s on Roosevelt Island.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

This rare collection of human deformities displays fetuses with two faces, one eye, and "mermaid" legs.

Camels and crocodiles share the black waters of this stunning Saharan oasis.

This simple stone monument honors a 19th-century tragedy.

Get up close and personal with these majestic fish.

An eclectic treasure trove of maritime marvels.

A meandering boardwalk across the bogland leads to a "stairway to heaven" with sublime views.

Final resting place of one of the classic authors of horror literature.

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."