Narrowest house in Boston.

The site of Paul Revere's historic two lantern warning.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The Boston square dedicated to the dark poet who was born nearby.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

The museum moved on, but the diorama remain.

In Grand Rapids, Michigan, a marker honors the creation story of a proud fictional culture.

On the right bank of the Grand River a plaque remembers an imaginary painter who once awaited his youth.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

This active volcano's siren song to suicide jumpers forced authorities to build a fence.

A community gathering place that once housed half-ton tanks and the World's Fair.

A busy cafe better known for board games than food.

A collection of haunted objects and macabre oddities under one roof.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The final resting place of soldiers' loyal canine companions.

An ancient neolithic tomb that only sees the sun twice a year.

The ancient tomb acts as a calendar that keeps perfect time.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The four tall pillars once marked the entrance of the historic Seattle church that fought for women's suffrage and civil rights.

This working class sculpture pounds his hammer all the livelong day.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.