Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

Cozy basement bar sports an inventory of over 2,000 beers.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The celebrated eyesore created by starry-eyed sweethearts.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

1513 Turkish world map, full of European state secrets and snarky commentary.

Where commuters walk through remnants of an ancient Greek necropolis.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A marvel of Byzantine engineering under the streets of Istanbul.

The life of one of FDR's possible mistresses is preserved in her palatial Hudson Valley mansion.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Plot your trip through the city on the sidewalk.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

A community theatre in Brooklyn that brings Country to New York and New York to Country.

A drawbridge named for a potentially intersex Polish national who fought alongside George Washington during the American Revolution, and an example of "Pulaski Red".

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.