| Structures made mainly of glass | 31 |
| Structures like the Washington Monument | 39 |
| Structures in the Gulf of Mexico | 32 |
| Structures built in the winter | 30 |
| Structures at Albany, Trenton, etc. | 35 |
| Structures above altars | 23 |
| Structures | 10 |
| Structured procedure | 20 |
| Structure's ability to sustain defects | 42 |
| Structure with towers and parapets | 34 |
| Structure with smoke flaps | 26 |
| Structure with pegs and poles | 29 |
| Structure with locks | 20 |
| Structure with layers | 21 |
| Structure with high-water marks | 31 |
| Structure with cells | 20 |
| Structure with a spillway | 25 |
| Structure with a skybox | 23 |
| Structure with a keystone | 25 |
| Structure whose name might make kids giggle (3) | 47 |
| Structure weakeners | 19 |
| Structure that resembles a shell in shape | 41 |
| Structure that resembles a shell | 32 |
| Structure strengthening a ship | 30 |
| Structure starter? | 18 |
| Structure preventing cattle from roaming | 40 |
| Structure popularized by Buckminster Fuller | 43 |
| Structure over a rotunda | 24 |
| Structure opening? | 18 |
| Structure on The Strip | 22 |
| Structure on the Arizona/Nevada border | 38 |
| Structure on San Antonio's city flag | 40 |
| Structure on piles | 18 |
| Structure on a tank | 19 |
| Structure on a predella | 23 |
| Structure on a $1 bill | 22 |
| Structure of this puzzle's theme, hidden in five answers | 60 |
| Structure of Chekhov's "The Cherry Orchard" | 57 |
| Structure of central Arizona | 28 |
| Structure near the thyroid gland | 32 |
| Structure near an apron | 23 |
| Structure near a flour factory | 30 |
| Structure made from poles and hides | 35 |
| Structure in the Louvre courtyard | 33 |
| Structure in Avignon | 20 |
| Structure in a children's song | 34 |
| Structure having piles | 22 |
| Structure for storage | 21 |
| Structure for spawning salmon | 29 |
| Structure for hydroelectric power | 33 |
| Structure for climbing | 22 |
| Structure for a Stoic | 21 |
| Structure for a rat race | 24 |
| Structure for a Euripides opus | 30 |
| Structure finished during Titus' reign | 42 |
| Structure destroyed by Katrina | 30 |
| Structure designed by Henry Bacon | 33 |
| Structure decreed by Kubla Khan | 31 |
| Structure damaged in a 1989 earthquake | 38 |
| Structure by the swimming pool | 30 |
| Structure built under the queen's authority | 47 |
| Structure at a landing | 22 |
| Structure at a castle's entrance | 36 |
| Structure | 9 |
| Structural units | 16 |
| Structural unit | 15 |
| Structural timber | 17 |
| Structural threat for many a house | 34 |
| Structural supports | 19 |
| Structural support piece | 24 |
| Structural support for a ship | 29 |
| Structural support | 18 |
| Structural study: Abbr. | 23 |
| Structural stress on a lab vessel? | 34 |
| Structural strengthener | 23 |
| Structural steel unit | 21 |
| Structural sci. | 15 |
| Structural prop | 15 |
| Structural posts | 16 |
| Structural piece bent 90° along its long dimension | 53 |
| Structural piece | 16 |
| Structural opening? | 19 |
| Structural members | 18 |
| Structural member | 17 |
| Structural material | 19 |
| Structural element | 18 |
| Structural damage caused by cyclic loading | 42 |
| Structural components of cells | 30 |
| Structural change in a corporation, briefly | 43 |
| Structural beams | 16 |
| Structural beam | 15 |
| Structural bars | 15 |
| Structural bar | 14 |
| Structural as opposed to functional | 35 |
| Structural additions | 20 |
| Structural | 10 |
| Struck, with "out" | 28 |
| Struck, to Spenser | 18 |
| Struck, to King James | 21 |
| Struck, so to speak | 19 |