Museum celebrating the achievements of the Soviet space program.

The tallest hotel in Europe.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

Stalinist skyscraper built with help of cryotechnology.

Former headquarters of the KGB.

An artist's cute bronze subway sculptures belie his violent artistic past.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

P-town goes wild for the malassadas at this 87-year-old institution.

The longest trolleybus route in the world, from Simferopol and Yalta.

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

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

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A hidden gem, named after a San Franciscan icon, offers spectacular views of the Pacific Ocean.

Inspired by a piece of concrete, these three pyramid-shaped buildings have been beloved Indianapolis landmarks for over 50 years.

Prehistoric animals decorate this popular outdoor park.

The world's longest known cave system.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

A bypass decorated with large wooden troll carvings.

A theme park attraction designed to turn your children into LARPers.