Former villa and estate of James Deering developed to preserve native tropical forests.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Roman ruins top white travertine terraces formed by ancient hot springs.

The ancient latrines of the Greeks, in all their public glory.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

America's oldest archaeological site or a muddled case of wishful thinking.

The stoutest tree in the world.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Hear the quietest sound from across the dome.

The ancient tomb acts as a calendar that keeps perfect time.

This single room has survived the centuries with almost no deterioration.

The most visited, and possibly most controversial, museum in Germany.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The first declared National Monument in the United States.

A mysterious taxidermy man-beast of the seven seas.

The largest collection of two headed animals in the world.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Towering basalt columns, a creation of fire and ice.

Northern Ireland's Brobdingnagian stepping stones.

The largest and most famous wax anatomical collection anywhere in the world.

This famous city eluded concrete detection until the early 2000's.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.