This 13th century Gothic brick castle is the largest in the world by surface area.

Boats must transform into railroad cars to navigate this Polish canal.

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.

The oldest hydroelectric plant in Czechia is now a museum.

An unusual heating plant that has garnered notoriety for its distinct shape.

Created as a "model concentration camp" to hide Nazi atrocities from the international community, this former camp-ghetto now holds a museum and memorial honoring the lives lost within.

In the town of Třeboň, carp is king.

Tall columns of volcanic basalt make up this improbable-seeming rock formation.

Heralded as one of the prettiest castles in all of Czechia.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

Abandoned substation turned village treasure.

This Gothic church was wheeled in its entirety to a new location a half a mile away.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

The sanctuary holds what was once believed to be the saint's incorruptible tongue.

A Cold War secret surveillance tower used to spy on radio communications.

This renaissance château was home to an infamous witch hunter who sent a hundred suspected witches to their deaths.

Before serving as James Bond's Casino Royale, this Victorian-era spa catered to the world's elite.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

Every part of this unusual home is built into the sandstone rock.

An enormous and lavish Gothic church in Czechia.

Tucked away in a Prague park, a statue beloved by romantics honors a poet so nice they buried him twice.

The 14th-century ruins are said to contain healing powers.