19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

Three prestigious academic collections come together to create a world-class natural history museum.

Bouncing, delightful, mechanical art at the MIT Museum.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

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

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

One of the indelible moments of the American Revolution took place at this location.

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

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The mass grave of a heroic Revolutionary War regiment sits below an empty lot near the Gowanus Canal.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

This two-room shotgun shack in Tupelo is the birthplace of a King.

An extravagant western hotel where every floor is the "ground floor."

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

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

According to the experts at the Guinness World's Record office, this is the longest candy counter in the world.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

An ancient quarry rediscovered by a dog and claimed by biblical kings, a German cult, and the Freemasons.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

This igloo-shaped landmark in Iqaluit serves as the seat of the Diocese of the Arctic.