One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Special benches that play Chopin's music are scattered throughout his native city.

This biographical museum honors the groundbreaking scientist at her birthplace in Warsaw.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

Look closely and you’ll notice that the color changes a third of the way up the tower.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

They sort through millions of dollars worth of diplomatic gifts on behalf of the government.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

The only tennis court that falls under the jurisdiction of the central bank.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Through the decades, Black music stars have performed at this historic hub for music and the arts.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

A line of blue paint marks the route of the inaugural parade.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

Also known as the Founding Church of Scientology.