Defying all odds, this lonely little tree found a home on a log sticking out of a Canadian lake.

A solitary tree has grown up all alone on Lake Wānaka, backdropped by the beautiful Southern Alps.

Faces carved into the cliffs create an otherworldly walking trail.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

This large pile of traveler-curated rocks by the dry lakebed is a longstanding tradition on the Old Mojave Road.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

A unique attraction and museum dedicated to exploring iconic roadside structures.

This hidden stream beneath Indianapolis makes an appearance in the best-selling novel "Underground Airlines."

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

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

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

Indents in the pavement are all that remain from a grisly death machine in Paris.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

An obelisk commemorating Lincoln's role in connecting the coasts.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

The second oldest continuously operating bar in Louisiana.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.