The Acropolis of Athens, seen from the Hill of the Muses.
The capilla (chapel) at Mission Santa Barbara.
Stair Hole at Lulworth Cove (Source: Robert Pittman, Flickr).
View from the Crooked Island Lodge.
The 13 mile Sheep Creek Geological Loop follows Sheep Creek into the mountains west of Flaming Gorge Reservoir. It follows the visually dramatic Uinta Fault.
Mount Rundle as seen from Two Jacks Lake. The mountain overlooks the towns of Banff and Canmore and displays the classic "sandwich" of Alberta front range geology: a lower resistive limestone (Palliser Formation) overlain by softer, darker shales (Exshaw and Banff formations) and capped by an upper resistive limestone (Rundle Group).
Peaks and Dunes, Colorado.
Devil's Doorway overlooking Devil's Lake.
The spectacular Peña Montañesa, Paleocene carbonates overthrust onto Eocene deepwater clastic sediments, is a conspicuous rocky outcrop of the Pre-Pyrenees in Aragon, Spain.
Petroglyphs in Honey Bee Canyon near Tucson with the Catalina Mountains in the distance.
Cheddar Gorge in the Mendip Hills, Somerset, England.
The Geevor Tin Mine.
Stacked fan delta systems tower above springtime olive groves, Agio Andreas near Diakofto.
Monterey Formation at Arroyo Burro with small faults in laminated brown mudstone and joints in the white porcelanite.
Ichthyosaurs ("fish lizards") are large extinct marine reptiles that thrived from Early Triassic through Late Cretaceous times. The first correctly identified skeleton was found by Mary Anning.
Outcrops of Pleistocene reef and sandy shoal deposits, west side of Long Cay.
Cast of a Camarasaurus lentus, Late Jurassic sauropod dinosaur, in the Quarry Exhibit Hall in Utah's Dinosaur National Monument.
Asymmetric anticline and syncline in limestone at Mount Kidd, Alberta. These folds are fault-propagation folds, and formed at the termination of the Lewis thrust.
The Cathedral Basilica of Saint Francis of Assisi, commonly known as Saint Francis Cathedral, in downtown Santa Fe, New Mexico (Source: Pedro Szekely, Flickr).
A stand of Saguaro in Saguaro National Park. These cactus grow slowly and typically take several decades before growing arms. They can live for up to 200 years (Source: PeteGregoire).
William Smith’s A Geological Map of England and Wales and Part of Scotland, first published in 1815 and on display in Burlington House, Picadilly, London.
Two tin mining engine houses in the village of Botallack (Source: unsplash).
A golden funerary mask from a burial site titled Grave Circle A in the ancient Greek city of Mycenae.
California's coastline shelters small colonies of southern (or California) sea otters, listed as an endangered species since 1977.
Corfe Castle is a both village in Dorset and the site of a ruined castle of the same name. The village and castle stand over a gap in the Purbeck Hills.
Green sea turtle (Chelonia mydas) swimming over. sea grass (Source: James St. John, Flickr).
Fantasy Canyon is south of Vernal, Utah, and contains Eocene sandstones and shales eroded into whimsical landforms.
One of the absolute classics of palaeontological mounts – the Royal Tyrell Museum's Tyrannosaurus specimen known as ‘Black Beauty’, because manganese has replaced the original bone structure. Due to its weight, the head has been cast, with the original at floor level.
Access to a cliff dwelling in Bandelier National Monument, New Mexico.
Frank Lloyd Wright's Unitarian Meeting House, Madison (Source: Todd-Klassy).
Carved duendes (mischievous spirits) in Jaca (Source: Juanedc.com, Flickr).
Chiricahua National Monument was established in 1924 to protect its rock "hoodoos" that rise hundreds of feet into the air. The hoodoos are erosional features formed in the Rhyolite Canyon Tuff, which accumulated in large quantities following three massive volcanic eruptions about 27 million years ago (Source: jb10okie, Flickr).
Chesil Beach in Dorset is a shingle beach, which is a beach composed of pebbles or small- to medium-sized cobbles (as opposed to fine sand). It runs for a length of 29km (18 mi) from West Bay to the Isle of Portland and in places is up to 15m (50 ft) high and 200m (660 ft) wide.
Panoramic view of the geodesic biome domes at the Eden Project, located in an abandoned china clay pit (Source: JMatern_060812_1822-1828_WP.jpg).