Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

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

Historic Hull Street was actually the first street with a proper name in the Boston area.

This landmark cemetery in Boston was created more than 300 years ago.

Narrowest house in Boston.

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

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

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

This statue intended for children to enjoy became a minor political spat.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Millions of numbers carved in glass represent the tattoos forced upon victims.

The only remaining historic maritime signal station in the United States.

Strange physical sensations and optical contradictions keep visitors coming back for more.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

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

An angular maze of concrete in Grand Rapids acts both as public art and as a staircase for fish traveling upstream.

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

The origin of the Nixon tapes is rooted in technological incompetence as much as secrecy.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The longest living non-clonal organisms on Earth.

Where condemned pirates met their grisly end at the gallows on the River Thames.

One of the greatest movie directors of all time lived and worked in this London flat from 1926 to 1939.