An 18th-century townhouse that once hosted guests of the president.

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

A small token of gratitude from freezing cold journalists who were given a warm haven while covering JFK's inauguration.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

For a buck, students can snag freshly picked apples grown in the university orchards.

This giant roadside fruit is home to an array of apple-based treats.

Granny Smiths and Fujis can both be traced back to Kazakhstan, where apples still grow wild.

A cultural center on the shores of Lake Malawi dedicated to preserving Karonga’s past and present, including the fossilized remains of the Malawisaurus.

This gravestone and its inscription inspired a movement that has spanned generations and saved countless lives.

Four hundred years ago, this turned-about message was carved into one of Winchester Cathedral's exterior walls.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

This cathedral's stained-glass patchwork of psychedelic colors and shapes was put in place long before the swinging 60s.

A brick-lined alley full of public artwork tucked away in downtown Gulfport.

Scotland's first free lending library, which protects literacy through inheritance.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

Several bricks indicate the various flood levels this crossing has survived over the centuries.

The ancestral home of the 21st president of the United States of America.

Reclaimed material from a convent destroyed by cannonfire was used to build parts of this 19th-century cemetery.

No passport is required to eat around the world at this elegant restaurant.

The small first-floor apartment where the author wrote her Pulitzer Prize-winning book 'Gone with the Wind.'

The true beauty of this church is showcased in the hand-painted stencils across the ceiling.

This salt lake in South Australia features seasonal color changes and its very own loch monster.

The world's largest single-aperture telescope resides in the Canary Islands.