Sunshine Village in late April, 2010. (full size)

It's almost spring in the middle of April at Spray Lakes, Kananaskis Country, Alberta, Canada (full size)

Lake Louise ski area from the top of Larch ski lift (full size)

The Roman Amphitheatre in Plovdiv, Bulgaria. The amphitheatre was built in the 2nd century AD under the orders of Trajan the Roman Emperor at this time, and is the largest surviving Roman construction in Bulgaria today. Built with around 7,000 seats, each section of seating had the names of the city quarters engraved on the benches so the citizens at the time knew where they were to sit. It is unfortunate that in the 5th century AD Atilla the Hun came to Plovdiv, and wreaked havoc causing damage to the amphitheatre (full size)

Arch in Arches National Park, Utah, USA (full size)

Arch in Arches National Park, Utah, USA (full size)

An exclusive beach for foreign tourists on Bulgaria's Black Sea Coast near Sunny Beach. (full size)

Bertha Lake in Waterton National Park, Canada (full size)

Old Growth Cedar Forest in Canada's Rocky Mountains (full size)

Meteor Crater in Arizona, USA: Meteor Crater lies at an elevation of about 1740 m (5709 ft) above sea level. It is about 1,200 m (4,000 ft) in diameter, some 170 m deep (570 ft), and is surrounded by a rim that rises 45 m (150 ft) above the surrounding plains. The center of the crater is filled with 210-240 m (700-800 ft) of rubble lying above crater bedrock. (full size)

Upper Falls in Johnston Canyon in Alberta, the Canadian Rockies. (full size)

Flooded Playground on Prince's Island in Calgary's 2005 flood (full size)

The Grand Canyon, Arizona (full size)

The Grand Canyon, Arizona (full size)

The Grand Canyon, Arizona (full size)

The Grand Canyon, Arizona (full size)

Ha-Ling Peak (2407m) and Canmore as seen from the col between Ha-Ling and Miners (full size)

The Los Alamos Mesas and Sangre De Cristo Mountains above Santa Fe, Los Alamos, New Mexico, USA (full size)

Indian Canyon (leading to the Grand Canyon), Arizona (full size)

Rock Formations near Indian Canyon, Arizona (full size)

Lake Louise in winter... (full size)

Lake Minnewanka in winter (full size)

Okanagan Lake and a development site. (full size)

The Opal Trail near Jasper, Alberta, Canada (full size)

Looking back from Mt. Orpheus. The second highest peak in Bulgaria's Rhodope Mountains. (full size)

Saskatchewan Glacier in Canada's Rocky Mountains (full size)

Savage Lake in Colorado, USA (full size)

The mountains around Sunshine Village, Alberta and British Columbia, Canada (full size)

Panorama from atop Sulphur Mountain near Banff, Alberta, Canada (full size)

The ancient Thracian Village above one of Plovdiv's seven hills. Plovdiv in the background. (full size)

A wind turbine in Pincher Creek, Alberta, Canada (full size)

Upper Kananaskis Lake in Alberta, Canadian Rockies (full size)

Emerald Lake in Yoho National Park (full size)

Calgary downtown at -35° Celsius (full size)

Saskatoon, Saskatchewan, Canada (full size)

Calgary, Alberta, Canada (full size)

Panorama from atop Sulphur Mountain near Banff, Alberta, Canadian Rockies (full size)

Panorama from atop Sulphur Mountain near Banff, Alberta, Canadian Rockies (full size)