Over-the-Rhine historic district in Cincinnati, Ohio, USA

Over-the-Rhine historic district in Cincinnati, Ohio, USA

The green tunnel, Santa Cruz Area / California

The green tunnel, Santa Cruz Area / California

Carlsbad Caverns Entrance in New Mexico, USA

Carlsbad Caverns Entrance in New Mexico, USA

Atlanta – the capital city of Georgia, United States.

Atlanta – the capital city of Georgia, United States.

The Seven Sacred Pools in Haleakala National Park, Hawaii, USA

The Seven Sacred Pools in Haleakala National Park, Hawaii, USA

California Tower in Balboa Park at sunset, San Diego, USA

California Tower in Balboa Park at sunset, San Diego, USA