This Quebec estate is home to the elaborate gardens of a self-taught horticulturist.

A mixture of strange symbols, ciphers, words and cryptograms carved in 1876 remain unsolved to this day.

A breathtaking 19th-century trail overlooks Lake Tahoe.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

The longest non-mortared wall in the country is one man's tribute to his displaced Yuchi ancestor's five-year journey to her homeland.

A trail weaves through the verses of a poem illustrated by stone sculptures inspired by Native American pictographs.

A winding medieval path was used by mourners to carry their dead to the nearest church.

A series of 33 stone markers maps an ancient 55-mile transportation route.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

Built in the 1920s, this co-op in the Bronx feels more like an Italian villa than a typical New York apartment building.

A tree that defies gravity grows in an ancient ruin.

You can still find treasures on the pebbly beaches of one of the world's oldest jade-producing areas.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

Crushed coral and crystals give the sand its signature coloration.

Living fossils in this remote Australian bay provide a glimpse of what Earth may have looked like 3.5 billion years ago.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

Much of what constituted mid-century Liverpool now litters a beach outside of town.

The "worst battleship ever built" is enjoying a grand second act, submerged 30 feet in the Gulf of Mexico.

This abandoned amusement park was built on a site with a dark history.

A haunting theme park is slowly being swallowed by the jungle.

A strange mishmash of ruins and abandoned structures hint at the park's many lives.

This medieval castle was painted pink as part of a now-abandoned children's theme park.

This western-themed amusement park is host to a large number of decaying animatronic cowboys.