The tallest bridge in California was constructed for a project that was eventually cancelled.

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

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

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

"We Seceded Where Others Failed."

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

A controversial memorial at the place where Captain Cook met his violent end.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

These ancient sacred grounds granted amnesty to those who managed to reach them.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

Breathtaking and huge 430 year old maps of Italy.

The world's largest wooden structure.