A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The "lovely red Vega" of the legendary record-settling pilot.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Fake rail crossings mark the site of an influential doctor's demise.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

Faceless white figures loom over the city from the rooftop.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A massive volcanic plug is now a protected area that hosts a number of bird species.

The unbelievably opulent home built for an infamous newspaperman.

The museum chronicling a treasure hunter's dream, fulfilled.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

"We Seceded Where Others Failed."

A monument celebrating the idea of reaching inaccessible places.

St. Augustine's record-setting narrow street was designed to protect against pirates.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

The largest retailer of seashells in the world.