Largest Roman Catholic church in North America.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A nostalgic bibliographic gem.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

This grand gothic brewery has been pumping out suds for over a hundred years.

From prostitutes to soldiers to business men, the dead in this graveyard are a microcosm of Singapore's history with Japan.

This jam-packed Singapore antique museum preserves the fading remnants of a uniquely mixed culture.

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

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.

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

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The two abandoned overpasses are among the largest bridges in Poland.

This unique railroad museum secretly contains the history of Poland rebuilding itself from the inside-out.

The manor house where the Polish composer spent childhood summer holidays is now a museum and concert hall.

The coffin-shaped church was once home to monks who slept in coffins.

Modern art commemorates one of the first military actions of World War II.

The biggest exposition of dental equipement in Europe. And a Mummy.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

This antique thermometer honors the creator of the first universal temperature scale.

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

The largest toy museum in Poland showcases Europe's history of childhood.