With a floor made of thick glass, this observation deck offers a full view of Sunwapta Valley's mountains and rivers.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

This magical museum celebrates the life and work of a seminal children's book writer (and occasional spy).

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

The sign at the garden gate reads: "These Plants Can Kill."

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

A common entry point to the Griffith Observatory trail holds its own wonders.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

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

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

An antiquated German apothecary on Chicago's North Side.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

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

The largest self-built castle in the U.S., six decades in the making.

A modernist landscape of water and sci-fi concrete.