Cliff Palace the preserved ruins and cave houses beneath rock face. Visitors walk through site of walls and towers with circular foundations leading to deeper caves.

San Xavier del Bac Mission. White-washed building with towers an ornate entrance and balconies

Hilltop castle with conical towers overlooking houses beside the Mosel River

Po Nagar Cham two ornate stone towers framed by tree branches

Looking up towards The Petronas Towers with a lightly clouded sky behind

Modern stone parliament building with rounded towers.

Town beside River Rhine. Building with twin towers. Boats moored at pontoons.

Town beside River Rhine. Building with twin towers. Boats moored at pontoons.

Ponte delle Torri The Bridge of Towers 14th Century Roman Aquaduct at sunset

View over rounded rock towers striped in alternate bands of orange silica and black lichen.

Central Park Bow Bridge. View along side of cast iron bridge across lake lined by trees and overlooked by city buildings and the San Remo towers.

Paseo de La Castellana. Puerta de Europa office complex at entrance to business district. Two modern towers partly framed by entrance to Plaza Castilla metro station.Worlds first leaning high rise b...