Golden Gate Park's historic collection of plants.

This private residence was the template for one of the most beloved television homes of all time.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Cemetery featuring rare glass-fronted columbarium.

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

Eat first, shop later at this eatery within an Asian grocer.

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

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

Site of the graveyard vine believed to be a curse on a family from the 1800s.

This sculpture commemorates the first instance of an American president pardoning a turkey.

This opera house along the banks of the Connecticut River has two Tony Awards to its credit but it’s never staged a single opera.

Public outcry led to this bridge's unique character which celebrates a giant frog battle and also sewing.

This blue behemoth of a bear is a colorful homage to Brown University's mascot.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

A collection of birdhouses await curious motorists and avian squatters.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

This tiny patch of arid sand sits in one of the greenest states in the United States.

Memorial dedicated to four citizens killed during a shooting spree prompted by a routine traffic stop.