# Sturdy Construction

**Entity Type:** Skill

**German Name:** Fundamente der Ewigkeit (Foundations of Eternity)

## Properties

| Field | Value |
|-------|-------|
| Category | Military |
| Type | Repeatable Research |
| Base Cost | 1,500,000 Knowledge |

## Effects

| Effect Type | Target | Value |
|-------------|--------|-------|
| Hitpoints | Towers and Gates | +5% |

## Description

Increases the defensive strength of your Towers. As a Repeatable Research skill, it can be researched multiple times, with each subsequent level costing significantly more Knowledge.

## Skill Tree Position

Located at the end of the Military skill tree branch. Repeatable Research skills are the most expensive and can be upgraded indefinitely, though costs escalate dramatically with each level.

## Related Skills

Other Military category skills include:
- Aegis Research
- Aux In, Aux Out
- Axe-Bearers
- Balearic Ballistics
- Perilous Ports
- Encampment Errands
- Carpe Civitas
- Cover Positions
- Multi-task Menders
- Equicurrian Chariots
- Featherweight Frames
- Plated Hulls
- Rammed Earth
- Dominion Research
- Here Come The Cavalry
- Imperial Measures
- Camp Campaigning
- Cataphractarii
- Co-ordinated Volleys
- Legatic Research
- Legionaries
- Legionic Research
- Manipular Manoeuvres
- Manor Invictus
- Nautical Research
- Ordine Research
- Parabolics
- Parmae
- Rain Of Pain
- Praetorians
- Bargain Palisades
- Pro Domo
- Provisional Castra
- Vitruvius-class Crossbeams
- Repair Cranes
- Armoursmithing
- Shipwright Studies
- Shipboard Scorpiones
- Protective Entourage
- Catapult Carriers
- Navarchal Research
- Scorpiones
- Spathas
- Brick By Brick
- Another Brick In The Wall
- Stone Walls
- Slingers
- Chariots
- Sword and Sald
- Tuatha De Danann
- Tower Ballistae
- Tower Contiguity
- Valetudinaria
- Cautious Greeting
- Tacking
- Target Practice

## Source

Data from [anno.land](https://anno.land/en/anno-117-skills/fundamente-der-ewigkeit/)