Two adjoining collections of 19th-20th century physics apparatuses and instruments.

An auroral research program that superheats the ionosphere.

The world's second-largest sundial, made entirely out of stone.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

Site of the first official transatlantic wireless communications.

An unrealized dream to wirelessly electrify the entire Earth.

Light still pours into the ruins of this ancient Islamic observatory.

Astronomical observatory above Lake Titicaca.

The biggest solar telescope in the world helps reveal the secrets of our sun.

In the most arid desert on the planet, the world's leading telescope allows astronomers to see more than has ever been seen before.

This giant dish located in a sheep paddock was the primary receiver of Apollo 11 TV transmissions.

One of the world's largest telescopes, stares into the night sky with two huge mirrors.

This historic observatory was established to keep shipwrecks from littering the Cape of Good Hope.

Suburban observatory was personal lab of the father of modern astrophysics.

Numerical symbolism abound at East Asia's oldest observatory.

Quirky Welsh observatory unites art and science.

Neither bomb blasts nor heartbeats escape the giant ears of this super sci-fi Arctic outpost.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

Small island science organization offers public the chance to participate in research.

The first life claimed by this record-breaking peak wasn't lost to exposure or a fall but rather lightning.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

World's largest precision optical instrument used to detect Einstein's elusive gravity waves.

The nerve center of a massive, state-of-the art radio telescope that sprawls across Western Europe.

This mountaintop observatory is home to one of the world's largest reflective telescopes.