Small ship votives hang from the vaulted ceiling of this port-side church with a Latin inscription on the wall.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

A swaggering, monumental souvenir of the most extravagant party Montreal’s ever thrown.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

An overlooked memorial honoring the local Washington residents who died in World War I.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

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

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

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

A more than 260-year-old crypt built on Boston's oldest English burial ground.

A men’s restroom became a sandwich shop.

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

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

This municipal playground was co-created by the father of one of the most playful characters ever.

Hopeless romantics will swoon over the sweet story behind this bright and colorful home.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.