The colonial home of Paul Revere during the American Revolution.

Large metal sculptures spread throughout an open landscape.

Interactive museum complete with costumed re-enactors and the only known surviving chest from the Boston Tea Party.

A 10,000-square-foot museum of operating model trains.

This bookstore for weird fiction doubles as Providence’s de facto center for information about H.P. Lovecraft.

This massive, ancient canal system was built using only sticks and stones.

Lombard Street may be more famous, but this is the real “crookedest street in the world.”

A large lava tube that can be walked through with no special equipment.

Wander down a side street dedicated to one of the members of the Beat Generation.

This historic hotel was once home to Henry David Thoreau and rumored to be haunted by ghosts of fallen soldiers from the American Revolution.

Around the perimeter of San Francisco’s second-largest park is a meandering 2.7-mile path designed to inspire contemplation.

A huge musical instrument played by the ocean.

This sculpture was made out of recycled guns that were turned in to the city.

Ruins from the Parthenon and petrified wood line the interior of one of the world's most famous monuments.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

A preserved college lock-up that recalls a clubhouse approach to discipline.

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

Lines on the pillar of Heidelberg's Karl-Theodor Bridge record the dramatic heights of past floods.

Named after and designed by women, this unique cultural center is an early 20th-century mansion covered in a modern shell.

A museum dedicated to celebrating the humble wingnut.

The grave of William Rosenberg, founder of Dunkin Donuts (now Dunkin') with shops coast to coast in the US and 42 countries worldwide.

Known as one of the most climbed mountains in the world, this barren peak is permanently bald thanks to an anti-wolf fire.

A tribute to Samuel Wilson, who may be the original "Uncle Sam."