Located near Cairo's El Korba district, the abandoned mansion continues to inspire mystery and rumor throughout the city.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

An unexpected treasure trove of military oddities, Turkish interior design, and North Korean art.

The lost library of Alexandria, revived as a spearhead of cultural preservation.

Underneath the Serapeum ruins lies a dark passage with nooks for books, the lesser-known “sister” to the famous ancient library.

This memorial park is also the original site of Queen Cleopatra’s Caesareum, whose pillars now stand in London and New York.

This fortress was built using the last surviving stones from the Lighthouse of Alexandria, one of the Seven Wonders of the Ancient World.

Hidden away in a back alley, this Art Nouveau cafe has been in business since 1882.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

Nobody knows what this saucer-like ancient Egyptian object was for.

A preserved oasis with traditional Andalusian-style architecture and beautiful views of the Nile.

This restaurant sits within the walls of an 18th-century fortification that once defended the city’s old quarter.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Go take a picture with the inventor of the daguerreotype photographic process.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

The "lovely red Vega" of the legendary record-settling pilot.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

A historic arena where the Beatles played their first concert in the U.S.

Home to a vast and influential collection of Shakespeareana.