This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A monument stands to the famous suffragist who penned the declaration for women's equal rights, including the right to vote.

The 28-foot granite map plots the locations of 40 theaters in New York City.

This Manhattan museum houses one of the largest collections of Spanish art and manuscripts outside of Spain.

A quick trip around the globe through an amazing miniature exhibit.

For almost a century, this East Village newsstand has served egg creams to beats, hippies, punks, and everything in between.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

Read a book next to a Midtown waterfall.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

Where the four original members of the Ramones hung out and revolutionized punk rock.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

San Francisco's newly reopened hands-on science museum.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A winding path built in secret on the edge of the continent.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A huge musical instrument played by the ocean.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

The platform atop this verdant volcano was built with the help of a royal elephant.

Tubing through a cave lit with glowworms is a magical underground experience.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.