The quintessential Japanese rock garden has existed for more than 500 years.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The subtle science of a master molecular gastronomist.

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

2300-year-old Roman road connecting the empire.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

Hear the quietest sound from across the dome.

Quite simply the largest tree in the world (by volume).

Twelve hundred stone carvings guard this off-the-beaten-path Buddhist temple.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

The eccentric mansion of one of the most popular horror authors of modern times.

See massive fossils that are over 200 million years old in northeastern Arizona.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

San Francisco's newly reopened hands-on science museum.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

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

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Not quite the menace it once was, this monster still has some chops.

Towering basalt columns, a creation of fire and ice.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.