First point in the Struve Geodetic Arc, a 19th century undertaking to measure the Earth's size and shape.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

A miraculous three-handed portrait of a saint can be found inside this church.

The Frank Zappa fan club erected this monument to their prog-rock hero to mark a new era of post-Soviet Lithuania.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Over time, this castle grew to encompass the entire island.

A statue built to honor the elite soldiers who fought for Latvia during World War I.

A monument to the grand synagogue that stood in this space before Nazis burned it down.

This charming Latvian lane doubled as Baker Street on the Soviet Union’s version of Sherlock Holmes.

The reconstruction of this prominent building fulfilled a long-written command.

The oldest housing complex in Riga is a mini timeline of architectural trends.

A black cat protests the City Guild in Riga's Old Town.

Flamboyant architecture from the turn of 20th century.

This ducal residence was once home to a future Russian empress and a French king in exile.

From atop a hill at the center of Cape Town, a cannon has been signalling the time since 1806.

The Cape of Good Hope is not quite as low as you can go on the African continent, but it's still geographically significant.

The first museum in the United States dedicated entirely to posters.

The former hotel where Tesla invented the radio.

The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

A vibrant, 100-foot-tall mural dedicated to Evelyn Nesbit, the tragic icon of the Gilded Age.

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

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.