Civil War Fort on an island in the Boston Harbor.

The mansion home of author Edith Wharton.

The sprawling, eccentric estate of Ames and Ames, a brilliant botanist, and a genius inventor and artist.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

A fascinating little museum all about the rich history of Peru’s famous plant.

The Uros people live on floating reed islands in lake Titicaca.

On this tiny spot of land in the middle of Lake Titicaca the only ones who do the knitting are the men.

These ruined Incan mausoleum towers still bear carvings of sacred animals on their blocks.

Certain traditions prevail on the least-visited island of the Aran Islands.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

The centuries-old trees lining both sides of this dirt road may become Madagascar's first natural monument.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

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

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

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

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

17,400 lbs., 12 feet in diameter, and 29 years in the making.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.