The only structure left with direct ties to the Salem witchcraft trials of 1692.

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

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

This small museum in a 17th-century building honors three iconic Scottish writers.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

The Tudor-style cottage in the middle of the square is not quite what it seems.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

This hidden labyrinth offers walkers some brief peace of mind.

A Harvard-area eatery preserves the uncovered tiles of its century-old predecessor.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

It looks like a whale, it's part of Yale, and it's best-known by a nickname you can probably work out for yourself.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.