This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

A historic neighborhood church is reborn as a psychedelic arts collective.

One of the last Jazz Age "Wonder Theaters" in New York City.

A collaborative art project that transformed a neighborhood in NYC's Queens.

Little Red Lighthouse under the George Washington Bridge.

This neighborhood grocery houses a treasure trove of Eastern European delights.

“Invented in Key West, Perfected in Brooklyn."

A hip bar decorated with walls of golden skulls.

Sniff the Titan Arum's rotting flesh.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A terrific purveyor of natural history objects and curios.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Home to items never before seen by the public.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

This medieval church tower has maintained its clockworks since the 16th century.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

Its collection includes a broad array of social, geographic, graphic design, and political history.

Shrapnel, dynamite, bullets and Franco couldn't destroy this bust, rescued and kept hidden as a family secret for over 40 years.

An ancient Egyptian temple in the middle of Madrid, Spain.

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

The unfinished final resting place of some of Spain's most prominent politicians.

A pair of gigantic baby heads greet passengers at Atocha Station.