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

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

Two thousand artifacts from around the world collected by one woman who loved to travel.

The last funhouse of its kind, where guests enter through the mouth of an 80-year-old blue whale.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

An imposing pair of sphinxes stand guard outside this Egyptian Revival tomb.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

Rochester's signature culinary delicacy.

An antique cemetery in New York, this land is home to any number of famed corpses.

The home, museum, and death site of Kodak's influential founder.

The cutest way to stay safe in traffic.

Underground attraction offering tours of the foundational ruins of a church nave that collapsed in 1674.

A hamlet full of permanent Christmas spirit holds one of the earliest theme parks in the United States.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

Located inside Hoge Veluwe National Park, this museum began as the private collection of a prominent female art collector.

Historic, 19th-century wagon wheel ruts cut into soft volcanic ash.