A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

The oldest surviving synagogue in New York City is now a soaring art space.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

Mysterious 500-year-old tapestries depict a unicorn hunt.

One of only two commuter aerial tramways in the United States.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

This massive library holds what was once the largest book collection in the world.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

A rare view of a preserved Victorian science museum.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Monasteries on rock pillars, once accessible only by frayed ropes.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

This South London cemetery holds the remains of more than 15,000 people.

A hotel and restaurant serving as the mecca of kitsch.

Shop selling 500 flavors of soda has something for everyone.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Northern Ireland's Brobdingnagian stepping stones.