A historic scientific breakthrough that crosses nine borders.

This stoic bronze soldier stands as a symbol of Russian sacrifice or Soviet oppression, or maybe both.

This former medieval prison now unlocks Estonia’s rich photographic history.

A series of concentric circles represented a bold new experiment in socialist urban planning, and it notoriously difficult to get around.

This old and disused water tower has received a new life as an art gallery with a piano staircase.

Troublesome students were detained in this tiny graffiti-covered university jail.

Once a year, local students "clean" this statue with a champagne shower.

The enormous isokinetic structure hangs within a science center in Estonia.

This Estonian watchtower looks like a big tree with two giant bird nests on it, complete with a "golden egg."

This behemoth bovine guards an Estonian town and is a memorial to the lost species.

The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

Wars fought and wars won are remembered by these abandoned bunker ruins.

A forest park outside Tallinn full of architectural and artistic curiosities.

For centuries young Thai men used this Giant Swing as a slingshot to heaven.

Fowl, love and death in Vietnam.

This Vietnamese bar doubles as a multistory labyrinth.

This cavern was used as a hidden hospital and safe house during the Vietnam War.

Life-sized painted illusions let pedestrians blend in with the street art.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

The lavish temple of the Cao Dai religion that includes Buddha, Mohammed, Joan of Arc, and Victor Hugo.

A desert in southeast Asia, complete with a beautiful lake covered in lotus flowers.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Bangkok's men with dangerous jobs come here in search of protective talismans.

A forest of phallic offerings found in a quiet corner of a hotel car park.